Help on choosing the right wiring kit to redo ALL the wiring in the car

I know this has been discussed over and over...I've researched the history...but some is either outdated or not exactly my application.

1971 Plymouth Scamp
340 not stock, using MSD distributor and 6AL ignition, auto 904.
The rest is a blank slate. Car is a shell right now. I have all my old wiring but it's 50+ years old, all mostly intact except for maybe a couple wires have been hacked a bit by previous owner(s). The charging system never was right the battery would lose charge when I used to idle in traffic for any length of time back when it had it's stock 318.

So now that I'm reassembling from scratch...I want to replace ALL the wiring of the entire car.

I want plug and play with Mopar stuff as much as possible. I'm planning on keeping the original steering column. I plan to update the car some with an aftermarket instrument panel/gauges with a voltmeter and losing the ammeter. Also aftermarket updated radio (bluetooth etc...). Maybe LED lights since that's the future...brighter and less power, less maintenance. The biggest change is I'm looking into adding aftermarket A/C now that I'm older, lol. Probably Vintage or Classic Air I don't know yet. The rest I want to keep original down to the factory optioned map light and floor dimmer switch. EDIT: I forgot I might also add electric cooling fans, perhaps that might be a good idea if adding a/c?

I'm not sure on alternator...I'm fine with Mopar OEM, 3-wire as 1-wire seems not what I want. Since I had charging issues before, and adding A/C, what amperage will I need? Do I need to go bigger than OEM....I'm not sure but I'd like to keep that option easily available to up that if needed.

Who is the best out there for this setup? I was leaning towards Ron Francis, but I don't know which kit is best or what I'm getting into. Wiring doesn't intimidate me too much, but if I don't have to do it all myself and can plug and play 75% of it except for the changes I want....

What confuses me as well is I see Ron Francis kits, even the most expensive, are half of what AAW charges for their "Mopar" kit? What am I missing? As far as I know both are supposed to be headlight-to-taillight kits? And maybe I don't need either since I'm not going crazy on power options here...

Thanks for any input.