Well jdphotoguy, your list is pretty extensive! However, in my opinion, I would make a few minor changes. For one thing, the aluminum mainframe and battery holder are really not 'needed' items and the extra weight wouldn't be worth it. As for the motors, they are a good idea, but I would add a heatsink to them. I've been flying stock motors for the last 2 years and haven't had to replace them yet. However, before you go for the high performance motors, you should first learn how to fly the little bird. Again, these are only MY opinions As for the skids...GREAT idea!! Boom kit....GREAT idea because it will help with outside flying. The upper\lower rotor heads and swashplate are virtually indestructable and a good idea. Flybar, you can use the stock flybar, shorten it and put it in a carbon fiber sleeve and you'd be surprized how long it could last. (depending on the severity of the crash, of course!) As for the flybar weights, you can buy little 'collars' at the LHS that would suffice nicely. One other thing you didn't mention was the upper bearing cup. I got an aluminum one and that be a good idea also! I don't know how much help this was, but I hope it gives you some ideas! GOOD LUCK!!!