Please help me spec the right components for this build:
I wanna build a 1x9 road bike with 11-34 gearing. I don't have any of the parts for this bike yet. It's gonna be used for centuries and light touring, and I weigh 150 lbs. I can get an Ultegra hubs Mavic Open Pro rims 32 spokes (15/14 gauge) wheelset for $250 new (a good deal? - I am open to other wheelsets if you know of something better). Plan to use a Deore XT 11-34 cassette. Oh yeah, the frame will be a 58 cm Soma Smoothie ES (chainstay = 430 mm).
So is this enough information to know the chainline exactly? And therefore specify the bottom bracket and crank? Or do I need to have the rear wheel built and physically sitting in the frame and actually measure it to be able to know it exactly?
If so, please recommend a bottom bracket, crank, and chainring, if you like. I'm was thinking a Surly stainless steel ring, 'cuz I heard those are good. 38T or 40T, something like that. I like a 175 mm crank.