I'm suprised that ppl are saying all the negative) performance aspects of larger rims. I have 225/40/18 and the accord can now corner on a dime and stoping power seems a 100 times better. When I slam on the brakes the car grips and the brakes don't even think about locking up. I can brake harder without lockup that the stock would do. Acceleration wise u will be slower. The engine will have trouble pushing all that rubber surface are forward. Its not a tremendous slow down but if u drive hard u will feel it. U can also forget about those long smokey burnouts on dry pavement. At least in my case I can only get a gentle burnout going and thats with the car straining its ass off. I don't do it anymore.
Definately get the rims. Chrome is up to u but just the fact of having low profile and wide tires is worth it. Before u put on ur new rims/tires push ur car (with ur hands) side to side and watch how much it will move around on the tire. Do the same with ur new wheels and u will see why the handling is soooo much better.