Dennis,
i'd definitely tell you to do ff in idle up, remember, if your not in idle up, then the problem is that you won't be able to come down, and when it finally does come down, you'll find that you've lowered your throttle stick so much that the motor almost stopped, and with the little power of the cpp, you'll be lucky if it doesn't crash. i'm by no mean an expert, i'm only 15 (just turned 15 on rememberance day) and i'm only doing loops and rolls. and in idle up, it'll really help you in windy conditions, (i fly even with 10~15mph winds). without idle up, when a gust of wind comes by, you'll find yourself going up and up, and you lower the collective, still going up, lower it somemore, then you'll find yourself starting to go down, but within a sec or so, you'll find your heli dropping like a rock.