I have the same sort of proportions-I am 5' 11" w/36" inseam. My experience is that any off the shelf frame will be a compromise setup at best. You either have too much bar drop or not enough stem to get correct steering. I now have a Carl Strong custom w/59.5cm seat tube and 56cm top tube w/11cm stem. Huge difference! I recommend custom-you'll be so glad you did.