Turnips,
Its great to have new blood in the Cobra fraternity, but to be honest if your not an enthusiast and you don't have the skills or will to over come some of the challenges, then a Cobra Kit is probably not for you.
They aren't production cars and as such have little idiocies that an enthusiast will find a challenge and those that aren't will loose interest in. I think ultimately you would be wasting your money.
I liked Ben's idea for you, buy a built up car, Strip, Refurbish, put it back together, put your own mark on it.
A 60's Mustang or Camaro route is probably a safe way to go if you loose interest or motivation on the way, someone will always take it off your hands.
Dave