You should be OK like that. I don't think you'll need the wheel spacers much but that would be a personal choice and opinion. Far as the lift goes, a 4" lift will clear 33's easy. You could probably get away with a 2-1/2 lift instead and save some $$$ that way. Especially if you went with say a set of 5/8 boom shackles.
***--- Wrecking Crew member ---***
"I've prolly been around longer than you think"
91 YJ 2.5L 5-spd, 31" BFG ATs, mostly stock NO RUST 172K in WNY, Daily Driver