The bottom bracket will probably be quite low so you want to go for 165 mm long to avoid pedal strike in corners. Not sure but you may have better luck finding that length with track gear? most road cranks are 170-175. Not sure what is available to you.

I have 165's on my road conversion and no worries until I tried racing, which was very scary in the bends!

I think Sheldon Brown has some measurements regarding sprockets, rings, and chainline. I just ordered my stuff and was lucky.