Okay so I guess 5 arm mountain bike standard is 110, and that gives a pretty close chainline. But the 110 size doesn't give too many options for chainrings/outboard BB's? Also they're triples so I have a useless inner bolt pattern.

I'm leaning towards either road double 130 or road double 135. Does this look about right? The chainline is more outwards so I won't need as ridiculous a bottom bracket, plus I can use outboard bearing BB's?