My understanding is that the 60 rating came at less than 100% duty cycle, and that 100% is in fact closer to 65. That being the case, I believe 65 is what you'd set up in your FAST program.
Yes, and do you have your fuel pressure set at about 3 bar static setting (42-44 psi)? If not ~ 3 bar then the inj size number should be tweaked as well.