For my next trick i will be turning a '86 Schwinn World Sport frame into a Fixed Gear Urban Assault vehicle. i know i'm gonna be riding this thing as my work horse around town bike but would maybe like to take it to the local velo for a little flat out fun. any advice on a good rim/tire set up as well and a good set of cranks that'll get me enough clearance to ride street as well as track. also, if anyone has turned a World Sport fixed, i'd like to know what size BB works best for chainring clearance and a straight chainline. the last bike i built up took me 3 times to get the right BB size for clearance so i figured i'd inquire before trying.

any opinions or general guidance would be much appreciated