I'm converting an older Raleigh road frame into a single speed. The rear hub is 126mm with a spin on freewheel. I'm thinking of getting the cheap Origin8 cranks which according to the website work with 103-107mm spindles. Would a cheap 107mm UN54 BB give me an acceptable chainline with this crank/hub setup? I've been reading threads for the last hour trying to figure it out, but I'm still not sure. Any help, suggestions, info, and insults are welcomed.