Get some 17's on ebay, and tires on discount tire direct. Most of the aftermarket wheels nowadays has a dual bolt pattern meaning if you have a 5 lug, most likely the wheels would have a 5x100 and a 5x114 bolt pattern so in case you bought a car that has one of those patterns you'll be fine, on the other hand you would also need to consider the backspacing, wheel offset and the size of the tires you have at hand before you could put the wheels on your next ride, you could always get the spacers in case the only problem you have is clearing the calipers. You don't need an alignment when replacing the wheels, only when you mess with your suspension