so im one of those guys who bought a 56cm IRO from the group buy who thinks he should have maybe gotten a 59. so my bianchi pista is a 56 and fits pretty good. does the shorter tube mean i'll just have a few more cm of seat post sticking out? will handling change? i feel like bikes that are longer rather than taller should be less "twitchy" less agressive.

someone fill me in.