Best Fuel Pump Advice for Newb...

Of course PSI is important, what you are looking for is gallons per hour or GPH. That Carter mechanical pump that was recommended is an excellent one. That should be all you need. This is it:

Carter Strip Super Mechanical Fuel Pumps M6270

I recommend a regulator with it, as the Edelbrock carburetors don't like a lot of pressure on the needle and seat. 5.5 PSI would be plenty. I also recommend a good return line as well and plumbing the regulator in the return line as that will regulate the entire fuel system and use the regulator as the return orifice. Of course you will need a return style regulator. If you do it right, you will have a very nice fuel system.