JJ,
You might want to buy the plans and see if you can modify them. I would like to see a mini deuce and half or 5 quarter.
I really like the idea of building some sort of tracked vehicle but that's down the road. Maybe a M-5 Stuart, M-113 or M-114.
I've been working on a gyroplane design for 4 years and I want to finish it before moving to the next project.