Actually if it had a bottle cage mount or two it would be a perfect road fixed. Perfect for short blasts that I mainly do on it. I have a (heinous) rear saddle double bottle mount thingy that I'll use for longer rides on it. And yeah 48x18 for climby days, 48x14 for flatter stuff.
Slotted in the matching wheel in today with its 18t sprocket for some hill repeats. I really can't recommend this frameset enough.