I've got to agree with Bruce here. This is NOT the plane to be flying as your second plane. Warbirds take a lot of flying skills, and they only way to get those is a lot of airtime on planes. The P-51 PTS isn't really a warbird in this sense as it has been tamed down to try and become a trainer, but it's not going to give you the experience you need to fly the Corsair.

Ken