Buy an Areomotive pump and order the one for alcohol. I know that a lot of people will say use a Walbro but I didn't have any luck whatsoever.
I run 45 psi on my R1 during hot weather and turn it up as the weather gets colder to a max of 50 psi. I recommend installing a pressure gauge on the dash it sure saves lots of time chasing your tail when problems arise.
Bobby Layne