Dogar- Please create your own thread for your question. I'd suggest the scale building forum to ask about sources for scale drawings. Hijacking other people's threads with an unrelated question is generally considered rude though in an online forum. Also, welcome to RCU. I think you'll find some great guys here.

12Harris12- The CG of the whole plane should come out as the CG of the fuselage, but there are exceptions. Wing mounted engines will shift the CG forward, for example. If this is a plane you are designing, that can be a good place to start once all of your components are installed. Of course, there are other considerations like the tail and nose moments that you need. I assume this is your own design?