You can get a 6" and run 33s just to get by till ya get bigger tires... if ya wanna run 33s for milage? crank the t-bars and put a 3-4" block in the rear, cheap and easy... even with a body lift you should run 35s IMO
Having said that, I have the EXACT same truck that is about to be lifted 6" and I will be running 33's until I wear them out! And even then, I may put 33's on it again I don't think it looks dumb... I think it looks lifted! I don't like the stuffed look. All that extra space says, "Yep, I jacked it up!"