Return style regulator would be the best solution as it will by-pass any fuel not needed by the engine keeping fuel circulating through the lines cooling them. This would require a large return line.

Before spending the money to convert to by-pass regulator, I would try connecting a line with a small restriction in it back to the 1/4" vapor line. This will by-pass a small amount of fuel.
On my 360 engine, I screwed a Holley Jet into the inside part of a -6 AN fitting as the restriction and made that my return hose. Just mark the line/fitting so you remember that it has a restriction in it.