I'm set up this way, i.e., an inline prime pump using the red Holley. A week to 10 days is all you will get without evaporation. Just turning the ignition switch to run primes the carbs, then when they are full, the pump shuts off.
I'm using the "electric fuel pump" feature on the Haas' Pantera-Electronics Ignition Controller that shuts the pump off when not needed while the car is running.
Jon is a bit of a genius, but don't tell him I said so. I'll never be able to deal with his ego. 
Mine is located low, below the tank on the chassis along with a Fram canister filter. That was easiest access for me, under the car, rather then on top.
The fuel line is run between the tank and the shield to a red Holley regulator on the firewall, then to the Webers. The system is set to run 3 psi at the carbs but can be dialed up at the regulator on the firewall. So far I haven't found this necessary but haven't done any track days with the car yet.
There is an electronic fuel pressure gauge sender plumbed in that you can see here half way through the stainless fuel lines in the back. There are lots of combinations that you can go to but the threat of heat sink and vapor lock isn't down low near the pumps, it's up high so you need to have lots of "air" circulating around the lines.
You can see that gauge in this picture of the dash at 3 o'clock through the steering wheel spokes.
