Fuel System Setup

I am using a pump set up from procomp electronics.
140gph Free flow, preset to 14psi,
Regulator is adjustable from 3-14psi
Filter is a high flow, not sure on microns, but it only has the screen, no element.

Pump http://store.procompelectronics.com/p-2023-140gph-black-electronic-fuel-pump.aspx

Regulator, mine has return though http://store.procompelectronics.com...e-fuel-pressure-regulator-red-non-return.aspx

Filter, can't find the same on their site, but this is their eBay listing
http://www.ebay.com/itm/PRO-FUEL-DE...r_Truck_Parts_Accessories&hash=item27bd69f0f5

I also just purchased my sending unit, which is 3/8 and only has an vent tube, Besides the out let. I have read on how some people have tapped a nipple for the return line. Is this safe and efficient? Thx