Latex Paint ?
Latex is great for finishing a warbird in a realistic paint job, not the glossy wet look like auto paint. It is cheap, easy to use, very durable, and availiable in whatever color you need....great stuff.
Explore using flat, or semi-gloss and see which you prefer. I used flat exterior on my Jug. I like the flat, but it shows a lot of scuff marks, which look scale, but I'm wondering if semi-gloss would have been better.
Vince