Well, it is my understanding that it takes a number of years of cycling to produce a good competitive cyclist. Also in order to be a good competitive cyclist at the top level, you have to be a freak of nature.

Any reasonably fit person can by training routinely turn out feats on a bike (like riding centuries) that leave normal people amazed.

Your age is what I see working against you. It will take about 2 years of cycling for you to get in cycling shape and learn the rudiments of the sport. Now assuming that you are a total freak of nature with astounding physical gifts for cycling, you could get sponsered and move up into the upper levels in 4 or so years. But that makes you 34. Lance Armstrong is 38 and he is considered pretty old for a competitive cyclist. And Lance Armstrong is a freak of nature. I just do not see you overcoming the hurdles to become a top pro cyclist.

Now can you become a highly regarded and respected cyclist in your local area? Certainly.