I have a 2008 Giant FCR1. It is a 9 speed. 2 frount sprockets 50t and 34t. 9 rear from 11t to 28t. How fast can my bike go? I have been told it will be slow. And that it will be fast. What is the truth. I have been 25mph and I know I am slow. Will the bike go faster than that. If this is a dumb question I am sorry.