I did that, and then used the spell ressurect to bring them back so that they will continue to give me XP. I think that's the way to get the highest level in the game, and then do all the quests after words.
AFAIK I believe I finished around level 60? Maybe 59.
One of the highest, afaik.
WOW! THAT'S MAD! :o As for me, I never bothered with trying to finish at too high a level, my general goal is to do the council ceremony at level 40, if you do that you end the game at level 50, which I think is more than enough to win the game with little
or no frustration.