Good info guys and thanks for the responses.

I'll probably stay at 4" and 33" tires. I've thought about doing a 2-1/2" leveling kit and an add a leaf in the rear as well but it seems people have vibration problems in the front end with the leveling kits for some reason.

A locker in the front is a good deal for solid axles but it isn't recommended for IFS 'cause that front end cant take the strain.