Let me save you some expensive tuition from the School of Hard Knocks. Don't buy anything with retracts for your second plane, and don't buy a scale warbird until you've become good with a low-wing sport airplane.

The landing gear on almost every scale planes is delicate (especially on grass - imagine landing a real aircraft in a field of mature wheat for a comparison). Things happen very fast when you're near the ground with a low-wing warbird and a moment's hesitation or a mistake will destroy the model and leave you with a smokin hole in the ruway.

Put $1 in a jar everytime you grease in a landing with your trainer. Everytime during landing or approach with a trainer that you say "whoops" or "oops, wrong way on the sticks", take $1 out. When you have enough money in the jar to buy a warbird - go for it.

For a second plane take a long, serious look at a Sig FourStar, a Kangke S/K 50, a Goldberg Tiger 2, a Great Planes Ugly Stik. When they're up in the air you won't care that they don't look like P-40, and they'll stay up in the air and return again where a P-40 model may not.