Balanced no problems. The CG was a little aft of published, but I left it and it didn't affect the flying charateristics much. I am sure that the 70 will give you plenty of power. I would suggest using the control throws in the manual, especially for the elevator, as it tends to tuck quite aggresively, but if you start off low and build up there should be no problems.
Overall I am v pleased with it. I have been flying helis for the last 4 years and have just got back into planks. Started off with a cheap trainer for a few flights to get my hand back in and have found the CAP to be very enjoyable to fly.
Regards