The Mt Lemmon control road run (which I'm going to :P) is such an easy road you'll have zero problems. I did it in my 08 Pre Runner (doing some sections at like 60mph lol). It's scenic and fun though. Come on out man!
Also yea, if cash is short.... first thing I'd rock is some sliders. Hit up Brandon at Avid Off-Road and he can get you setup... I love mine he did.
Will it look silly without tires? A tad but not too bad. I did all mine at once but it shouldn't be too bad.