might wanna go to your LBS and see what they think.

I was going to do a DIY conversion of my 1976 Motobecane SS conversion and it turned out I had to re-dish my wheel and all this stuff that I would have not been able to figure out, but mostly because it was an old French frame.

Just go talk with them and build up a relationship. It will help in the long run.

I was able to use my old BB with 170 mm Lasco track crankset (46t) to a Surly 16t rear cog.

1/8 inch BMX chains are good and sturdy for SS-grinding up hills and such.

Mavic CXP22 track wheelset is the bees-knees... and looks awesome in black

Conversion turned out really nice.

Hope this helped/inspired a little