First off, there's little, if any differance between a the gearing you're looking in real life riding. I'd stick to a 46-36-26 myself, because that's Sugino makes that combo of chainrings ramped and pinned. The greater the number of teeth between chainrings, the more trouble you're going to have.

Here's the crankset

http://www.jensonusa.com/store/produ...s.aspx?sc=FRGL

This stock crankset will work fine.

Also get one of these to stop chain suck.

http://www.benscycle.net/index.php?m...0&currency=USD

My advice is to not make this any harder than it needs to be.