The beginnings…
Neat Design and cool concept there.
What specs do you have there with the kicker and the cylinder
It’s too soon to be publishing specs, except to say that these are all legal parts and pressures, and there is no “human” assist 
The goal here is to show “what” can be done without showing “how”
how do you guys get so much space?! we only have a janitors closet for storage and a classroom to work in
I spy a little torsion spring. 
What psi are you running at and how many inch/lbs of force are you getting out of that spring?