1. Must the Father have a sacrifice for there to be "balance in the force" so to speak, or is his son something he freely gave?
The story of the Bible starts in the garden, a story of God's work to redeme His creation from sin. Some things were necessary per the covenant's He made with His people. But beyond that, as to spiritual forces and balance, well that get's into things not explained. We see through a glass darkly.
2. Does the blood of Jesus or an animal make us clean, or are we to write the spirit of these on our heart in the form of humility, self sacrifice, love and submission to the Father? I.e. does Jesus show us how to get right with the Father by dying of self, or did his blood do something in its very nature to satisfy a need for blood on the part of the Father?
Hebrews 9
Now when these things had been thus prepared, the priests always went into the first part of the tabernacle, performing the services. 7But into the second part the high priest went alone once a year, not without blood, which he offered for himself and for the people’s sins committed in ignorance; 8the Holy Spirit indicating this, that the way into the Holiest of All was not yet made manifest while the first tabernacle was still standing. 9It was symbolic for the present time in which both gifts and sacrifices are offered which cannot make him who performed the service perfect in regard to the conscience— 10concerned only with foods and drinks, various washings, and fleshly ordinances imposed until the time of reformation.
The Heavenly Sanctuary
11But Christ came as High Priest of the good things [c]to come, with the greater and more perfect tabernacle not made with hands, that is, not of this creation. 12Not with the blood of goats and calves, but with His own blood He entered the Most Holy Place once for all, having obtained eternal redemption. 13For if the blood of bulls and goats and the ashes of a heifer, sprinkling the unclean, [d]sanctifies for the [e]purifying of the flesh, 14how much more shall the blood of Christ, who through the eternal Spirit offered Himself without [f]spot to God, cleanse your conscience from dead works to serve the living God? 15And for this reason He is the Mediator of the new covenant, by means of death, for the redemption of the transgressions under the first covenant, that those who are called may receive the promise of the eternal inheritance.
The Mediator’s Death Necessary
16For where there is a testament, there must also of necessity be the death of the testator. 17For a testament is in force after men are dead, since it has no power at all while the testator lives. 18Therefore not even the first covenant was dedicated without blood. 19For when Moses had spoken every [g]precept to all the people according to the law, he took the blood of calves and goats, with water, scarlet wool, and hyssop, and sprinkled both the book itself and all the people, 20saying, “This is the blood of the covenant which God has commanded you.” 21Then likewise he sprinkled with blood both the tabernacle and all the vessels of the ministry. 22And according to the law almost all things are [h]purified with blood, and without shedding of blood there is no remission.
Greatness of Christ’s Sacrifice
23Therefore it was necessary that the copies of the things in the heavens should be [j]purified with these, but the heavenly things themselves with better sacrifices than these. 24For Christ has not entered the holy places made with hands, which are [k]copies of the true, but into heaven itself, now to appear in the presence of God for us; 25not that He should offer Himself often, as the high priest enters the Most Holy Place every year with blood of another— 26He then would have had to suffer often since the foundation of the world; but now, once at the end of the ages, He has appeared to put away sin by the sacrifice of Himself. 27And as it is appointed for men to die once, but after this the judgment, 28so Christ was offered once to bear the sins of many. To those who eagerly wait for Him He will appear a second time, apart from sin, for salvation.
You can see with this the futility and silliness, if not outright folly, of continued earthly sacrifices today now that Christ has come.
3. If we are to have these concepts written on our hearts, once they are, what does a continued animal sacrifice do? If it points to Jesus, who then shows us how to sacrifice ourselves, and we then die too as living sacrifices, wouldn't the animal sacrifice be redundant or circular?
Nothing. "It was symbolic for the present time" speaking of the time of the first covenant. That time has passed.
Heb 9 again
Now when these things had been thus prepared, the priests always went into the first part of the tabernacle, performing the services. 7But into the second part the high priest went alone once a year, not without blood, which he offered for himself and for the people’s sins committed in ignorance; 8the Holy Spirit indicating this, that the way into the Holiest of All was not yet made manifest while the first tabernacle was still standing. 9It was symbolic for the present time in which both gifts and sacrifices are offered which cannot make him who performed the service perfect in regard to the conscience— 10concerned only with foods and drinks, various washings, and fleshly ordinances imposed until the time of reformation.
Not just redundant, but insufficient.
Heb 10
For the law, having a shadow of the good things to come, and not the very image of the things, can never with these same sacrifices, which they offer continually year by year, make those who approach perfect. 2For then would they not have ceased to be offered? For the worshipers, once [a]purified, would have had no more consciousness of sins. 3But in those sacrifices there is a reminder of sins every year. 4For it is not possible that the blood of bulls and goats could take away sins.
....
And every priest stands ministering daily and offering repeatedly the same sacrifices, which can never take away sins. 12But this Man, after He had offered one sacrifice for sins forever, sat down at the right hand of God, 13from that time waiting till His enemies are made His footstool. 14For by one offering He has perfected forever those who are being [d]sanctified.