Just got my motors mounted, and the tail-wheel. They all turn freely, and it is a great design for a mobile base. I tried stepping the motors a bit, and found they contained plenty of power to move the base on a level surface. I did not incline the plane, though.
I also completed my MCU programmer, now I just need to make a cable for it to interface, and then I can start programming! I have drawn a few flow-charts which are very condensed and I think I know how I shall aproach the mammoth task.
I am building my stepper controllers tomorrow, and think the robot will INITIALLY use steps for navigation, just as an experiment. But that will not be acceptable in the end product.