so now that i'm ready to pull the trigger on a bike, I find they are out of my size. I was looking at the mercier kilo wt from bikesdirect.com. it's a wide tire, cro mo single speed. I was looking for the 53cm. i'm 5'10" but my legs are on the short side. they have the bike in 56cm and that's just the slightest bit on the tall side for me. I had my heart set on this bike and nobody has anything even remotely similar. what would you do??? HELP?!?!?