ok, one at a time.
first, if you say "i'm going to follow the council of Jerusalem" that's good. my question is why stop at that council, and not follow all the rest?
two, as i mentioned, that council examined the question of what to do about the gentiles, and where did the apostles go to get the answer? Leviticus. they took a close reading of Leviticus, and applied all the holiness code commandments that were given to both the sons of Israel and the foreigners dwelling among them in the land. this affirms that the torah applies to the church.
next, you cut the Lord's quote short. "...For truly, I say to you, until heaven and earth pass away, not an iota, not a dot, will pass from the Law until all is accomplished. Therefore whoever relaxes one of the least of these commandments and teaches others to do the same will be called least in the kingdom of heaven, but whoever does them and teaches them will be called great in the kingdom of heaven." He goes on, but the point i'd like to make is it sure does seem like you are suggesting that St Paul is contradicting Christ, and it sure does seem like you're removing a whole lot (basically all?) of the torah from your life. how is your "fulfilled" different than "abolished"? they look functionally identical from here. St Paul denies teaching people to not follow the Torah.
then... St Paul quotes from the Torah as authoritative. specifically in the matter of church discipline - which you said the Torah doesn't say - he quotes the torah where it is explicitly talking about death, for the crime which he is discussing with the Corinthians! (Lev 20:11)! how can you say the Torah doesn't apply to church discipline??
yes the pharisees criticized Christ for not following the Torah, and they were WRONG. the point that Christ makes is that their understanding and application of the Torah is WRONG. HE was right - HE gave them the Torah. THEY were wrong, they misunderstood it. the Torah was never given to prevent someone from, for example, saving a life on the Sabbath. you either say - Christ broke His own law (??) and they pharisees were right in accusing Him (??!!) - or they were wrong and He did not. since the psalms and prophets say he has no sin, and the Torah reveals sin, i don't think we should say Christ broke violated the Torah. Especially because He specifically says He fulfills it.
A changed heart doesn't mean you don't follow the Torah. A changed heart means if you have love for your neighbor, you won't break the Torah. That is exactly what St Paul teaches (Gal 5:14) which echoes the words of the Lord (Matthew 22:40). you quoted the fruits of the Spirit - that comes in a discourse about the Torah, where St Paul concludes with saying "against such things there is no law," meaning, if you do these things you will fulfill the torah.
and if we're going to say - only council of Jerusalem applies - what about the ten commandments? are you free to murder, commit adultery? of course not. there is nowhere in the scriptures that says what is and isn't applicable, because it is ALL applicable. and in fact the scriptures explicitly say that 1) it is all applicable forever and 2) it was never canceled. otherwise we make St Paul -- and the Lord!! -- a liar.