What a super chioce you have made. The Weeks is one of my favorite Bipes-- I have had a few. I have the 70" Solution and the 77" Solution X-- both Miles Reed Plans. I did not build either, but I can tell you they are very forgiving as bipes go. I have a D&B 3.7 for boty and it is the perfect enging for both planes. Black is the SolutionX and the red , white , and blue is the Solution. They are somewhat older design and are therefore NOT 3D machines, but are built like tanks and float forever. I use a combination of 8101 and 5945 servos and throws are as much as you can get! Enjoy!!