33s are a little big, but a few members have them and do ok, it sure wouldnt hurt anything (other than your ground clearance) to go a little smaller, when its time for new tires i will probably end up with a 31.5" tire

i work in a shop, so if you have any Qs about parts pricing/ labor costs to make sure you are getting a fair deal, feel free to ask and ill get you quotes for what it would be in my shop for comparison