Thanks, SalsaMTB. I think I may have to think a bit more. I have ridden a road bike a number of times, more for recreational purposes, but long enough (up to 3-4 hours) to know I didn't care for the fit. Actually, the biggest thing was how far my hands had to stretch to brake and change gears.

But I'm guessing I can customize a stock frame to fit me better, as you recommended?