It seems to me that running a high pressure pump, two lines and a regulator to the surge tank/pump is not only overkill but a waste of money as well as unnecessary weight.

All you need to do is get fuel to the surge tank at the recommended pressure and there's no need for either a regulator or a return line. And it can be accomplished with a pump that costs less than $50. (the Mr. Gasket pump mentioned in a previous post).

The FITech recommendation is a 3 - 8 psi pump feeding the surge tank and this will supposedly support 1200 HP (not that I'm anywhere close to that!) Presumably they've done some testing !!!