I am a heavy rider 250 living in congested New York City what kind of sprocket should I being looking at. Top end is not a concern since I won't see much highway speed. If my top ends up being 50 I can live with that. Also I have a zoom loop exhaust and was thinking of getting a intake will I see any improvements? Or do I need a fuel controller. P.s hitting the gym haha to get some added weight off.