'73 Duster Budget Barebones Re-Wire!

First off, I'll admit; I am absolutely terrible when it comes to wiring! My '73 Duster is a factory /6 auto car, and the previous owner butchered the wiring pretty bad, from front to back the factory harness is pretty far gone. I reckon it'd be a good learning experience to start from the ground up and re-wire the car. The goal is a ratty, sleeper-type car, with a small block stroker.

I'll be doing away with the A/C, but would like to have a radio, heat, etc. I don't plan on adding much, in the way of extra electrical components. Just the necessities.

At the moment, I'm considering Speedway's 12-circuit universal hot rod harness right now, the reviews are very positive, and at $149.99, it seems a very budget-friendly option. Everything's labeled, and I believe it to be pretty complete, for what it is. It advertises pretty much every circuit I could think of using. I guess my question is, would this work for what I'm trying to do? Should I go with the 22-circuit instead, just to be safe? It's going to be a tough project, but I plan on doing it right, and I'm hoping to learn a lot in the process.

The only issue I can think of right now is that the harness doesn't include a circuit for an electric fuel pump. Seems like I could use the electric choke circuit with a relay, and run an electric pump, but I'm not 100%.

Here's the link:
12-Circuit Mini-Fuse Universal Hot Rod Wiring Harness Kit

What do you guys think? Thanks for reading!