What transmission & gears do you have? (you should fill out your profile, it will help us-help you) as far as the lift and tires, are you gonna be doing alot of off roading, is it your Daily Driver?
I have a 2.25" Budget Boost lift and my tires measure 32x11.50x15, I didn't notice the power loss, but my mpg's went from 19 to 16. I've got the 4.0L, with a 3spd auto and 3.07 gears.
your gears are probably 4.10s