Ari,

I think the 120 would be fine. I'm at about 14lbs with the 180 and an onboard glow driver, with it's own 4 cell 100ma battery pack. You could probably drop a bit of weight with the smaller engine and still have good performance. We are at 2800' above sea level so i thought the extra power would be needed, but it isn't necessary. I think when I get used to the model and adjust the CG a bit it really is going to be a lot of fun. I just may learn to use all that power!

Randy