I think you'd be better off with a Caterham 7.
Nah, they cost too much. Plus, I'm in the U.S. and Caterham is in the U.K., and I can't spend $25,000+ on it. I could build a Locost 7 for less than $10,000. I'd be doing all the work myself except for maybe the body panels.
I'll use a Miata 1.8L as the donor for the engine/trans/axle/suspension/electronics. All that would be left is building the frame/body and swapping the parts. There's more to it than that, sure, but I'm not expecting to have it done in a month