2" is a lot. Especially when you're trying to get it to cam over and you're all out of room. A qualified bow shop should be able to set it up correctly for you dad in a few minutes and make the poundage decision after that. 60/70 might seem like a lot in the middle of the winter when you're not shooting but by late summer after you've shot a lot getting ready for bow season and you're all enthused, it might be just right. I'd say that after the draw is set correctly and he can shoot 60lbs just fine, keep it cuz he'll probably be crankin it up a tad after plenty of shootin.