I picked up one of the Harbor Freight airbrush kits, and it's a solid compressor, the hose is fine, and the AB itself is craft quality (keep it absolutely clean, and it'll be fine). However, tankless air compressors suck - the pressure builds up a little bit in the line, and when you first hit the button, it surges a little bit at a higher pressure then settles down to what you dialed in, which gives mixed results on the paint.
I picked up one of these compressors as a kit a few years ago, and it's much better.
https://www.amazon.com/Master-Airbrush-Runner-Compressor-TC-326T/dp/B07ZQM6R83
The air tank acts as a buffer and doesn't allow the line to pressure up nearly as much.
The water trap is necessary if you have lots of humidity, and the pressure regulator is super helpful for dialing in the right pressures depending on what paint you use. I normally prefer the more flammable paints (like House of Kolors urethane enamels, etc.), but decided to make friends with water-based acrylics, since my booth has a normal fan, which could cause a fire with the fan motor being in the airstream. I'm planning on building a booth using a bathroom fart fan that has the fan motor outside of the airflow by using a squirrel cage motor set-up (needs to be bigger, too).
I found the booth on Amazon as well, and it's OK for small model cars and similar sized projects.
Once I got the color I wanted, I shot it with some Future Acrylic Floor Finish (now called Pledge something or other), and it's really awesome. Dip your glass pieces in the stuff, and they'll look like real glass after it all sets up. I'm still working on this kit after years (pesky job and other life things get in the way), but it's coming along nicely. My real version of this car also had buffer burn marks in the paint when I bought it back in '87, so that was a happy bonus, but be careful when sanding between coats as airbrush paint usually goes on thinner than spray cans and covers better.
That hood ornament was not a decal, BTW - I hand-painted that with a Molotow 1mm chrome paint pen, 1mm red, white, and blue Sharpies, and made the running horse with another blob of Molotow chrome.
As for the kits, the new AMT kits are a LOT closer to being anatomically correct than the Testors or others before (those have the same plastic bits as the Testors die-cast kits, which are '73 bumpers and headlight doors on a '71 grille - I ordered some resin grilles and bumpers for a couple of those kits I have. Stay away from the Lindberg Mach 1 kit - it's atrocious. I haven't seen the new Monogram kits yet, though. If you want something that's really close (only a few minor things wrong), find an Otaki or Doyusha 'Vanishing Mach 1' kit on ebay (they ain't cheap, though - I got mine 1/12 + 1/24 dual kit for $125 several years ago).
Something else I've learned to have a lot of fun with is weathering. When I made my original model version of this car, I didn't pay attention and painted all sorts of things with whatever colors I had, so the underside of the chassis is silver, stuff under the hood is completely wrong, and I used an '83-'84 kit... but, it'll all I could find at the time. This kit was weird, as I had to make the rack since neither of the poseable front wheels were connected. Lots of fun.
Anyway, hope that helps. Have fun, no matter what.
