Oh Yeah,
Just remembered that they also mentioned using a mini receiver and micro servos, so keep that in mind. What it means is, your regular Futaba equipment is really too heavy for that Rascal.

Look at the Hitec 555 receiver, and HS-55 servos. I'm guessing it'll cost you another $100 though.

Maybe you should get the 40 size Rascal and mount your trainer engine and radio gear in it.
Dennis-