This is my first post and you'll have to bare with me. I'm 55 years old and started biking last year on a $100 supercycle bike. I feel in love with it and now i'd like to upgrade to better bike. I'm hoping to pick up a decent used bike, but i'm not sure what to get. I have seen a giant TCR1 for $700 which looks to be in great shape. The problem is the bike is a size small and I am about 5'6" tall. Would the bike be too small?