Almost went 18's myself,
These 18's from a Wrangler Overland will bolt up but would probably need a 2" lift with there 32" 255/70/18 tyres.
Personally I would probably go ATX Ravine's with the +35 offset.
Here is another set of 18" off a Wrangler in Victoria, not common here in Oz.
https://www.gumtree.com.au/s-ad/crib...els/1158728608
P/S All 18" Wrangler rims are +45 offset so clear the suspension fine but the bigger 32" (our factory size is only 29.5") tyres do rub on the sway bar on full lock.