http://naruto.wikia.com/wiki/Palm_Bottom 

http://naruto.wikia.com/wiki/Eight_Trigrams_Vacuum_Palm

32 isn't too bad. I suppose it would be fine.

The assassination change is acceptable. 

If you change his birth, he would be born during the Second Great Shinobi War. If you change his age, he would be born three years into the Reign of Sai and would be 12-13.