NiCads and Lipo batteries do not behave the same..

Good luck on the first flight.

Go gradual on all of the fancy stuff in the 7c. First rule of flying any plane (full scale or model): fly the plane and worry about the gimmicks and problems later. Basically that means if the plane is way out of trim, just manhandle it until you are in a safe position (altitude and speed) and THEN worry about trimming it. It doesn't do any good to be distracted by a problem and crash when you should just keep the plane in the air.