RE: Skymaster F18
I'll second Ali's suggestion - 14 lbs of blow is not enough for the F-18. It would fly (though likely not off grass) but it would NOT be fun.
It's a pretty big and heavy plane with plenty of drag and a P120 is just about right, on mine I rarely use full throttle except for takeoff (pull back to 1/2 after cleaning up) and on some vertical manuevers. With missiles and tanks mounted it will need all 28 lbs. in certain regimes.
I just looked at the Skymaster website, it says 20-35 lbs. thrust for the F-18A/C..... big difference from 14 lbs! I suspect 20 lbs. would fly it OK, especially if you keep it light.
Barry
PS - Attached wrong pic...anyone know how to delete an attachment??? My F-18 is the pic on the right (obviously!)