Hi, I am new to this website, and have been flying RC for about three years.

I am currently building a Twin Commanche from a Jack Stafford Kit. I estimate the weight to be between 9 and 12 lbs. It will be fiberglassed.

The specs are:
Wingspan: 72"
Length: 48"
Wing area: 775 sq. in.

I was wondering what engines would be the best for this airplane - it will use 12" props. I am at an altitude of 6000 ft, and wanted to get two Saito four-strokes for it, but I don't know what size. I would like a fairly high top speed. Is a 72 or 80 good? I am afraid that a 91 would bee too much. And if I got a 91, would I be able to use a 12 x 12 prop on it?

Please help!

Also - I was wondering what torque servos I needed for this airplane. It will have an all-moving tail. It will also have one servo for both the ailerons - each aileron is 2" x 14"