I'm trying to find a frame that'll let me do everything. So far my only option looks to be the Gunnar Fastlane. Any one know of another frame that'll let me do all of the following?

Disc Brakes
Rack/Fender Mounts
Steel (or something else very comfy)
Vertical Dropouts
Be able to handle big studded tires (I'd want to run with the nokian W106 45s, but might have to settle for 35s)

I'm trying to keep this kind of cheap, and transfer over as many components as I can from my road bike. I'll guess I'll have to buy some disc wheels, what's the open pro disc equivalent?