Your chainline target is 43 or 48mm (http://bike.shimano.com/catalog/cycl...=1167402179521
When built up in it's Nexus configuration, my 1x1 has a BulletProof crank
on a Shimano 113mm bottom bracket with a $10 BMX chain. I'm using the ring on the outboard of the crank. Going by the Bulletproof spec, a 107 mm BB would have given me a perfect chainline but the stay of the 1x1 are to wide.
As for the straight chainline comment, my is supposedly off by ~0.100 and I've had zero issues (fyi, my Nexus is the coaster version).
This is Africa, 1943. War spits out its violence overhead and the sandy graveyard swallows it up. Her name is King Nine, B-25, medium bomber, Twelfth Air Force. On a hot, still morning she took off from Tunisia to bomb the southern tip of Italy. An errant piece of flak tore a hole in a wing tank and, like a wounded bird, this is where she landed, not to return on this day, or any other day.