Leveling up the crossbow is a useful thing. The guy in the house near the lake, who also gives the quest for the old stone tablets, definitely raises Strength to over 105 (if I'm not mistaken). In general, I leveled up the two-handed weapon for my paladin because later you get the Claw of Belial and can defeat everyone.
Strength is already very expensive – 4 points per point, let's see. But weapon skill can be almost brought up to a hundred with the stone tablets.
I wrote about the Claw; I threw it away. By the way, it turned into a one-handed weapon when I tried to enchant it, which is very generous of the developers for min-maxers.