I am training for a MS150 ride and I am thinking my mountain bike isn't going to cut it. There's s 2010 Trek 1.1 on closeout for $500 at my LBS. The weight limit is around 275....just about the same as me. Should I go for this? I don't want to do the used, craigslist way because I wouldn't know if the bikes are solid or not. I'd rather a new bike with a shop to support me. The 1.2 and 1.5 looks tempting as well but it easily gets up to 1K. To me that makes $500 sound like a steal. Will I be happy for these charity type rides and a few 20-30 mile weekend jaunts or should I pry the wallet open a bit for more?