Thanks all:

I am moving this conversation to the scratch building forum. Please feel free to continue there or here.

I built the tail surfaces last night. I increased the horizontal stab area to 10.2% of the wing up from 9%. The rudders are more lightly built than they look and use carbon fiber rods, aluminum tubes and nylon bearings. They will be installed just above the stab surface (they are sticking up in the photo because the tubes are too long.

I am going with two Saito 30s for now. I can always build a second center pod if I want to try three engines.

One last question: If I use a freewheeling prop in the center, what happens if I dead stick? Won't it act like a parachute?

Jeff