[J-Man]

Looks good! Trust me, you'll be hooked on pneumatics, it really is the best way to go for a lot of props. I will offer a bit of advice though, true programmable controllers will give you a much more realistic random effect for props like this. Not knocking key bangers, I just personally like things to be more random instead of the exact same set of movements each time the prop runs.

 

[J-Man]

I wouldn't know how to program a controller, I would not know where to begin with it. Button mashing I can handle...

Don't sell yourself short, it's a lot easier than most people think. There is a bit of a learning curve but the time invested to learn is well worth the effort. I use a lot of PROP-1 controllers from EFX-TEK .com. The software to write the programs is free and you'll get all the help you need on the EFX-TEK forums. Once you get the hang of it, you'll really enjoy the programming part of building props, it's half the fun of any project.