Unless you know a lot about frame geometry and how it relates to you and your style of riding, a custom frame has little meaning.

Get a stock-sized frame from a good builder, the right size for you, and put your money into a proper fitting after the fact.

Find a bike fitter with real credentials, usuallly a prostheticist or orthotist who fits pro riders, and spend your money there.

If you still want a custom-geometry frame, I recommend Warren Rice of Realm Cycles in Sisters, Oregon.

http://www.realmcycles.com/