Sounds like you're on the right track here.
OHS seem to be good for the beginner o-lifter because of the transfer to the snatch. They are somewhat unique in their dependence on core stability and shoulder strength and its development of both, but as a strength development tool, I think you would be better off with other squat variations.
As you said, you're limited by what you can jerk and what your wrists can handle. Bypass those limitations by using a front squat or back squat, and you're now using weights that will be much more effective at getting you stronger. Also, the ohs seems to be one of those exercises that as you progress on squats, presses, jerks, etc.., you're able to progress a great deal on them without specifically training the ohs very much.