Not sure if anyone really cares anymore, but I found the offsets for total EXP.
0000134x - 0c-0f
0000135x - 0c-0f
0000136x - 0c-0f
0000137x - 0c-0f
not sure which goes to which class/party member, but if you set them all to the same number the game will set your level accordingly.