There is a big difference between your Cherokee frame and the 4Runner's. It has a full one. There are a ton of cheaper suspension options for the 4Runner also. I would go with OME coil springs and Bilstein 5100s all around and call it good. You can get a front CV for @ $60-80 bucks now too.
The 4Runner would make a great trail runner build IMO. Once you get used to the Toy, you may like it more.