Okay, so, first of all, I don't consider myself a Christian in the modern sense of the word. I totally understand where you are coming from, the Jesus of today has been completely hellenized into something he is not. The idea that Paul disagreed with Yeshua is not in keeping with the Bible. Yeshua didn't do away with the law neither did Paul, he reiterates that many times ("God forbid that the law is of no effect"). Yeshua is the Word become flesh, the Word being the commandments therefore it is obvious that the law is still in effect. Most Christians do not understand this anymore, but would if they honestly studied the Bible. I do believe in circumcision, I don't eat pork or other unclean foods, and otherwise seek to follow the Torah. Also, I don't believe in the doctrine of the trinity, true biblical doctrine is that there is one God...hear o Israel, YHWH our God, YHWH is ONE. There are not three gods, just as much as we are one being made up of body, spirit, and soul. These are not just my opinion, this is what the Bible says.
Also, Paul did hate the followers of Yeshua at one time, until he became one himself. Throughout his writings, he is passionate about his people Israel and desperately wanting to see them come to messiah.
There has been much deception, Constantine definitely playing a big role, it is my desire that more people would seek the truth about these things.