Turbo six on a Budget

OP I haven’t used one of these modules but I like the idea. And it sounds like a good way to go.
On that type system, I would use a pump similar to what you chose. If you go EFI, I think an in tank pump would work better. I think I would use this.

Holley 255 LPH OE Style Efi Fuel Tank Module
And I think with a good carbureted bypass regulator you could use it and get the pressure down.