Alloy, Rough Country and Daystar have front leveling kits for the JL/JT. Have the Daystar lift and ride quality to me is great. Don't think you'll notice any difference with wheel spacers installed.
Have been out twice. First time kept to fairly simple trails. Second time pushed things a little harder. Was with two JKUs with 3.5" lift and 37s. Only ran into a problem once but still was able to go over the rock (third
pick).
Got first oil change with the Wave program and dealer said they would not rotate the tires since the wheels were aftermarket. Too many customers complain of damage. Asked the service rep, "what more can you do to them?". It's not like I would be able to tell.
Installed the Daystar 2" spacer lift (2" spacer front, 1" spacer rear) and it only came with bump stops for the front. Also came with shock extensions for the front but the rear shocks bolt back up to the stock location. If you are only adding 3/4" spacer at the rear should be fine as is.
Daystar 2" lift with 35" tires. Control arms that come with the kit are about 1/2 longer than stock. Wanted to keep the stock shocks more than anything.
Was initially going to get a Sport S with max tow but after looking at a Rubicon with some of the same features mentioned decided on the Rubicon. No regrets here. Do I need all the extras, no but it's nice having them if needed.
Chip in mine second day out and was behind a car no dump truck around. Replaced glass in JKU and within a month had cracks again. Learned to live with the cracks, saw no reason to replace.