There is no bushing kit. There are various bushings on various parts. The advice was to replace them "as you need them." That means look them over, and replace what needs to be replaced.
The upper and lower control arms have bushings on each end. The LCA bushings are all in the arms, so if you plan to replace the lower arms, you'll be doing bushings then as part of the replacement. The upper control arms have bushings in the arm at the frame end, but the axle end bushings are mounted to the axle. Check those out, because those won't automatically be replaced if you go with aftermarket control arms.
And don't get so hung up on height. A properly set-up MJ does NOT need a lot of lift to be off-road capable -- they are off-road capable in stock configuration. Especially if this vehicle is your daily driver and only sees occasional off-road use, you should be looking for the optimum configuration using the LEAST possible lift and the SMALLEST possible tires.
Thank you for the insight. So basically by redoing the suspension, in it's entirety, then I will be fixing most of the bushings. I'll also definitely check those other two bushings against the frame. And the main reason I wanted to go higher was because of the rub, but I also like the way it looks sitting that high. I'm keeping the same size tires.
Thank you everybody for your inputs, and I've already ordered the majority of the lift from the previous thread. Only missing a couple pieces.