Dude there is a ton of feedback in here on both the lift and wheel / tire size subjects.
Do a "search" and you will find more than you probably want to know...... no replies yet to your question posted today means that pretty much all of us have answered the same question at least a dozen times already.
Do your search, and then if you havent been satisfied repost a question that is a little more specific and you will get a flurry of answers, I promise.
p.s. Here is what a 2.5" front/1" rear lift looks like on my crewmax with 305/50r22 toyo tires (34") on KMC Monster wheels (22")
With a 4" lift 33s are going to look way too small. Youll want 35s for sure. With that being said, its personal preference whether you like 18s or 20s. 35s look good on either. If you end up doing 33s then go 18s.