I'd comment on the exclusive-model idea. It's a good idea.
I think if you do something that isn't done already at all, or is done poorly (Flogger family!), and you do it in a kit that can be built up to one of several variants, and the kit is done very well, that will be noticed, and it will sell. And it will build a reputation for Kinetic of putting a quality product out.
And then, when you later release something else that is more directly taking on some competition, people will remember: "Oh, Kinetic did that brilliant MiG-23 (or whatever)!"