My P4 has the same set-up and i run the front tank first, then the rear tanks. Rarely do i fill all the tanks actually, but rather keep the rear full, and just enough in the front to “make the day”, unless im in a long distance tournament, then ill pack em all ! Most i know would rather just run the rear tanks on a normal day on the lake, and keep 5-10 gallons in the front for emergency fuel. D.