On craigslist they have this bike, 2008 Specialized Allez Double for 350 or a 2007 Trek 1.1 for 400( i talked the guy down to 400). Or should i get another bike entirely. My price ranged is from 200 - 500 and im 5'8" so i should probably ride a 54 if that is correct. Any advice would be amazing. Also, where should i get the gear for the tri?