Joined: Nov 2004
Posts: 1,882
Likes: 0
From: NYC/UpperDutchess, NY
Bikes: '06 Cannondale Six 13 Pro 2, '05 Specialized Allez Elite, '04 Jamis Satellite, 90's Raleigh M-45 single speed conversion, 80's Fuji Team single speed conversion, 70's Schwinn World Sport
Try the 30 first.
Going out on a longer ride (the 60) that you may not be prepared to do is no fun for you or the group.