For the front tow hooks, the mopar hooks are really all thats available but since youre wanting bumpers you do not need those. The ARB bumper is one of the best bumpers that can house a winch if you want. It also has two mounts for D-rings which is why you dont need the tow hooks. Rock Lizard also makes front and rear bumpers for the kj but is a little behind on orders so it takes awhile to get his bumpers. RL is a great guy and makes some awesome things for the kj.
RL also makes great sliders for the kj so look into those.
research the skids some and you will find some different options. For the front suspension skid you can really only get the mopar skid but you have some other options for the gas tank, tcase, and ******.
If you want to do lots of rocks you really need to get rid of the stock tires and suspension.