Check out the video...
http://www.jetsrc.com/videos/Gripen02.wmv
This one is powered by an Artes Bee 14lbs and the turbine is in the tail. You can see that excelent power and performance is achieved. The P60 is 13 lbs of thrust, I guess 1 lbs won't do much diference, so you should do ok with it.
Michel