Based on what you plan to do with it I don’t see any need for rear. Front is a preference option. You will have similar rake as you do now without a lift after you install the mopar lift if you don’t add any spacers. The spacers in the front will reduce the rake. The bigger the spacer the less...
If you are talking wheel spacers, my tires are 34”, stock wheels and no spacers. They are 11.2” wide. I think you can go 11.5” wide or less and be ok without spacers.
I think this will answer your question.
https://www.jeepgladiatorforum.com/forum/threads/mopar-lift-spacer-or-no-spacer.43383/#post-704608
Mine ended up settling over time to over an inch of rake. If I did it again I probably would have went with 3/4 or 1 inch spacer.
What did you do with your factory parts after installing your lift. Mine are just taking up space but I don’t think anyone is looking for Sports S take offs. Scrap metal?
I think your rim will stick out about 3 inches more than the stock rim. Use this to figure it out. I think the stock rims are about +44 offset. The link below should be setup as stock vs the rim you are looking at...
I purchased a Metalcloak and a Synergy adjustable track bar and decided to go with Synergy. I did put anti-seize on it and test fit it but took it back off, zero miles. Instead of sending it back I thought I would pass it along for a discount. I would like $150 for it.
Call around to places that aren't affiliated with the big chains. I just called the place in town that did my Colorado and they are booking appointments 3 days out and he said he bought a bunch of material in advance of the shortages.