With that sprocket ratio you should be able to take off spinning the rear tire and lofting the front wheel in the air! I ride all flat land and really want super fast topend. I switched cranksets last night from a 16/48 to a 16/52, also going down from a 170mm arm to a 165, I just ordered a 14 tooth freewheel for even more top speed, looking to get well into the 30's.