i tried searching but didn't come up with a definitive answer. i also posted on another thread about shorter riders but didn't get any answers as well. hopefully someone will be able to help me out. i'm currently converting an old 48cm super mondia road frame. i'm 5'5" with a short (29") inseam. i've decided to go with a sugino rd track crankset but am torn between a 165 or 170 crank arm length. i'm worried about toe overlap and hitting the front wheel on tight turns. i'd like to go with the 170 as i feel like i'd be more efficient but if it will cause problems i'll go with the 165. has anyone my size had experience with this?

secondly, the rd comes with a 48t chainring. i also found a sugino xd crankset with a 46t. would there be any noticeable difference between the 2 with a 16t cog?

thanks in advance for any replies.