those roberts frames look nice!

yeah, the BB should work fine. just be sure to get the 6500 ultegra double crank for it. if you want to use a triple, you'll have to look for a BB like the one above, but with a 118.5mm spindle.

you could also use a 105 5500 double crank on that BB, or a 7700 dura ace double crank on it. they all take the same size spindle.