I'd say your minumum fuel pressure would be like 37psi with the 30's and an aftermarket fuel pump. You probably would not run out of fuel with the 24's, however if you create a great combo like Skyman and pull 330rwhp then 30's would be a great idea. The only way you would max out your 24's would be by getting a custom tune (recommended) and adjusting the pulse width and duty cycle.
But if you ever want to go with Nitrous, 30's would be better.
