Thanks for your replies, lets see ...
MaxGunz it's true that after fighting this hard with arduino i should have been more conservative and buy something like the teensy as it seem to be more focused on the device/controller stuff.
DD_crash.... that's some thing i'been thinking, but right now i will keep working with what i have right now... what i mean is that is just a future thing whenever i get enough money... also you still have one axis unused and a few buttons so you can use the empty handle or the base for a few extras...
Bolelas yeah thats right, we would only have one axis for mix but as you almost say dreaming is free