Does this set up seem sensible?

Just puked my second mechanical pump, so I'm going electric. Plannining on mounting a Carter 4594 by the tank, I've already installed a 3/8" tube in sending unit. Using a large canister type filter befor the pump. Running 3/8" line to a factory type filter I found with the vapor return nipple and 3/8" in and out nipples. From the filter, itl go to a regulator then to the carb. Anyone see a problem using the factory return system with this set up? And do I need to run a relay with this pump? Its on an on/ off road vehicle that sees everything from 110° days in summer, to well below zero in winter. I've already got most of these parts and wanting to put them to use. Its only feeding about 275 or 300 up. Any input would be appreciated. Thanks, and sorry about the Crappy diagram, I just woke up and haven't had my coffee yet0717170702.jpg 0717170702.jpg 0717170702.jpg 0717170702.jpg