Return Style Fuel Line Size?

[lescok]

Hey guys building a return fuel system for my 03. I'm now down to fuel line sizing for the hard lines. I was thinking 1/2 for feed and 3/8 for return- should this be good for 700-800hp?

 

[I'D WIN]

I am running 10AN and 8AN. The capability really depends on the rest of the system. What other components are you installing or already using?