Personally I recommend that you put the Corsair aside (and out of mind) right now. Don't even think about assembling it until you've done the same on a few more basic planes first. You will learn things assembling a trainer and something like a Sig 4 Star that will be a great help when faced with the typically more vague instructions you get with a warbird. If you do assemble it now, there's also going to be the constant temptation to try flying it before you're ready. This usually leads to extreme disappointment when your new plane ends up in little pieces.

Focus on finding a trainer and learning to fly it. Then start thinking about a second plane and see how you do on that one. By the time you're flying your second plane well, begin thinking about the Corsair again. However, depending on how you do with the 4 Star (or whatever plane you choose as your second), you may need one more before you move up to the Corsair.

Having said all this, ONE thing related to the Corsair that you might think about now is to choose a larger than normal trainer (.60 size) and engine (something that would fit the Corsair). Then you can eventually move the engine from the trainer to the Corsair.