Excellent! You have lots to throw overboard. It was on this forum that I heard of "Racing Weight" by Matt Fitzgerald, which helped me quite a bit. Simply improving your diet quality -- substituting water for soda, for instance, will make a difference in your weight. You don't say what kind of bike you have, but guessing that since you posted here it's not a beach cruiser. Some bikes and riding positions lend themselves more to a high cadence than others, but I reckon you have a good start.