!9s on a pro would look good if you can find the right offset and some coilovers to tuck the wheel a little. But, you will feel ALL of the bumps, and you will gain about 40lbs of wheight. Im thinkin you will either need to find, or get a wheel shop to machine the wheels to at least a +50 offset but no more than +55. The reason being that most of the 19" rims out there are at least 8" wide, and if you go with more of a possitive offset you will rub on the strut.
My personal opinion, go with 18's, you will not have too much trouble finding a +45-+48 and most of them are 7.5" wide that will give you some room inside the wheel well.