Not sure about the Rubicon, but I have 16" Grand Cherokee rims (pre '97) with 255/85/16s (33/10.50) on my '87 Comanche with 4 1/2" coils and fixed lower arms. (I also did YJ front brake hoses which were longer and needed anyways, plus made shock extensions out of 1/4" pipe and 2 exhaust studs with extra nuts since my shocks were near new)
I have used the stock tracbar, but have an adjustable to put in, along with stronger tierods, etc (Grand Cherokee) because mine was 2WD. Well, it still is, but it only needs the tcase and trans put in now!