CMPro planes are not light weight planes, they are just average for whatever class they are in, if you want very nice performance for the Extra then go for a 120 4C, the Saito 100 might be ok too. A 108 2C would be great stuff! My Edge 540 (90) flies okay with an ST G90 only and she weighs about 8.5 lbs.

As for the Matt Damon I think if you were to read the thread here you can see what has worked.