This is the reason I usually try to discourage conversions. Too many people want to take a frame made for 27" wheels and fit 700s. The BB will be lower to the ground and even if you go to 165 or even 160mm cranks, the risk of touching a pedal down in a turn is increased quite a bit. And on a FG that's not a pretty sight to behold... I've seen it more times than I cared to.