I have a 126mm spaced frame hooked to a phil rear flip/flop hub....I got a 110mm bottom bracket for it, and that works for me with stronglight double (my ring is on the inside) cranks that I have

unless someone can give you a first hand experience with sugino 75 cranks, I would say that the best thing would be to see if you can install an old bottom bracket, measure from center to the chainring, and then work from there (subtract what you need to ) to meet length of the center of hub to cog teeth on a phil hub (bout 42-43mm....see http://www.sheldonbrown.com/chainline.html )

don't know if that made sense.. I was able to install an old BB and measure and guestimate, and the 110 worked for me