Ray 67, those guys have given some pretty good advice. Build it light and it will fly right. Take your time getting the right carbon tube. It has a big effect on weight and strength.
If you have any questions about building, there have been plenty built here to look at, and I'll answer any questions you have.
Yesterday evening, I got mine out at the field and practiced harriering, hovering and knife edges. For knife edges, I would take off and immediately roll to knife edge with the wing tip about 6" from the ground. I did this over and over again until I caught a tip on a slightly too low Knife. The cartwheel was fun to watch though.

3 drops of zap later, and I was back in the air harriering around again.
The prototype is getting a little 'long in the tooth'.......