rapptor,

I went with a sprint/P-80 combo for my first jet and haven't regretted it. It lands short and takes off pretty quick. With the flaps down it will slow down nicely. I fly off a 400X50 asphault runway and it's plenty for the sprint. haven't tried grass with it yet,but I'm sure it would do great there too. Don't know much about the Falcon 120 but if it's not designed for a Turbine it will take a lot to convert it I'm sure. You're much better off going with a proven airframe than trying to save a few bucks and always wondering if it's good enough!! This is just my opinion so take it for what it's worth. A friend of mine has a Falcon that he was going to convert but decided it was just too much work to convert it properly.

chris