There are no low wing trainers with the same characteristics as a Spit. You have selected one of the more difficult warbirds to both build and fly. The Spit will be frighteningly fast, alarmingly responsive & utterly unforgiving. For example, there is no stall progession -- one second it is flying (even floating) & the next second it is a rock -- the entire wing stalls simultaneously. It won't want to to slow down to land, but it will just quit flying when you aren't ready. If you get in trouble at low speeds & goose it, there's a good chance that it will yaw strongly & roll over to the left. There are also other equally interesting characteristics just waiting to be experienced. Trainers of any configuration don't do this stuff, & a 4 Star is a wallowy wimp in comparison.

You aren't ready for a Spit, & you won't be for a good while yet.