Honestly the real problem with this quest is the Bebelith that spawns that requires +3 weapons to hurt. Unless we revert scrolls back to their former glorious CL15 state, I don't think its terribly appropriate to have that monster on the quest.
The traps I wouldn't have a problem with if they weren't buggy as hell. Often you and your party will run over a half dozen, only for them all to fire at once a minute later. It's a lot of damage all at once. Turning them into an equivalent regular negative trap would be better.
I would also like to see the backspawns reduced or removed. It puts an unnecessary pressure on the return trip since they can spawn right on top of you.