Advice Needed! Road bike v's TT
New to triathlon,this will be my first yr of many i hope, am a fit chap,which i need to be as i'm in the army. Have signed up to do a 70.3 in galway in sep,with hopes of completing an ironman in 2012! Investing in a new bike,have a road bike already which does fine,but want to upgrade! ? is,ROAD BIKE OR TT BIKE! Goal is to finish an ironman with being comfortable on the bike,my weakness is my flexibilty,would a road bike be o.k for an ironman? Looking at planet x NANO-LIGHT!