... or you could accept that 'son of man' and 'son of God' are Hebrew idioms, treat the man as Joshua bar Joseph, a Rabbi of the time, and focus upon what he is alleged to have taught rather than what he is alleged to have done.
Hi ekim
Unfortunately, there are almost as many problems with those as there are with the theology associated with Jesus' supposed miracles, the Crucifixion and Resurrection and the Atonement (but the problems are probably a bit easier to unravel).
"Son of man" appears to have two distinct forms of reference: just an idiom meaning a person, particularly as a form of circumlocution to refer to oneself, like the English "Yours truly". But it also has a distinct reference, which I suppose derives from the latter part of the Book of Daniel, where the "Son of Man" figure descends to judge the world - Jesus refers distinctly to this in Matthew 24, for example.
"Son of God" has an equally broad reference, starting with the "Sons of God" in Genesis who lusted after human females (they appear to be naughty angels). Elsewhere it has a general meaning, of no particular exalted sense, more like just a human being. But all this has been confused by New Testament theology, where its use is specific to Jesus (except for references in John, where certain elect humans may apparently aspire to Jesus' status - how that squares with the doctrine of the Trinity I haven't a clue, nor am I particular interested in having the matter explained).
I quite like the way you attempt to find parallels between Jesus' sayings and eastern philosophy, though how this is to be verified I'm not so sure. No doubt you'd say that following some spiritual path or practice would reveal the obscure similarities, but in the end, it all seems a bit subjective, and you might be reading stuff into the texts which is not there at all (though 'purifying the heart' seems clear enough, providing you don't think it means removing bad cholesterol blockage)