RE: adjust the CG or trim
Yeah, I don't mean to repeat what has already said, but no matter what you do, do not set the CG for tail heavy. You should START out with at least a nose heavy plane that is easy to land no matter what you do with it after that. So, set it up as mentioned, then fly it. Trim it for hands off straight and level flight. That way you can land it when you are ready to land it.
There is a saying that I've seen here on RCU. Nose heavy planes fly ok, tail heavy planes fly once.
All the adjustments should be tweaked in after your initial CG setting so that you get what you want, but the first flight should always be with a nose heavy plane. Now, after saying that, I don't mean that as soon as you lift the plane at the CG point, it immediately drops the nose to the point where it falls to the ground and bury's the nose about 5 inches deep.. no, it should be set so that it will slightly drop the nose with your fingers or the CG tool set at the CG point.
CGr.