Mike summed it up very well, you don't need 2 receivers in a 25% plane. If you were setting up a 40% or larger 2 receivers would be needed. An isolater is not needed on a plane this small. Adding all the additional weight and system complexity is a bad idea. In terms of servo's a jr 8411 or hitec 5945 will be more than enough. When you get done adding all the batteries and other equipment if you find the plane is underpowered I've got a 3w-240 we can mount on it.
