As stated, leave the DC3 in the shop. I have one. It is great, but I have been at it for over 27 years. It is a lot of plane. I have seen a few like you think they can build it too. They couldn't. Thats a lot to pay and then throw away when you screw it up. Build a few kits, learn the tricks to keeping it light and strong, and then think about it. Chances are, you are paying way too much for it anyway (did I say that?) Get the trainer and get with a club and learn everything you can. Build 4 or 5 planes, then think about the DC-3. It is a lot of kit. You will like it better later than if you build it heavy now or take on too much and burn out.

You will have a much better chance of finishing it if you wait. I know that is hard for a 15 year old to believe. I had the same problem when I was your age. I had to have the best kits, and I blew a few up. It is a costly lesson to learn. You have lots of time. Don't rush it.