I am ordering everything to do parallel fuel rails and aftermarket FPR install. Does anyone know from experience how many feet of hose they used? I am about to order 10'. That's more than enough, right? I am running my AN lines from the top barb on the fuel filter to a Y splitter, to the rails, to the FPR, and then to the return line.

 

I just did a friends FD fuel rail setup with 6'. I don't see why yours would need more than the 10' you bought.