ReadyLift SST 2.5" lift here as well. It gives 2.5" in the front and 2" in the rear.
https://www.readylift.com/jeep-jt-gladiator-sst-lift-kit-69-6025.html
I went with 295/75R18 and kept my stock overland wheels but added a spidertrax spacer for wheels. spacers. Also added the falcon...
Here is mine with the stock 7.5” overland rims on 295/70r18 Yokohama Geolander AT. Yokohama offers a 30 day guarantee that allows you to return them if you are not totally satisfied. They also have a great tire mileage warranty.
Since the rims are 7.5” wide, I added a Spidertrax 1.75” wheel...