Ok, I think I've reached one of the final phases for now. I installed a wooden floor so I can store more kegs in there. I don't plan on needing more than 2 taps right now, but I'd like the space to cold crash or carb 1 or 2 stand by kegs.
The floor is not fancy (and not quite straight), but it is level and pretty solid.
One thing I still need to figure out is how to stabilize the CO2 tank. That huge double regulator easily causes the whole CO2 tank to topple over, using landing on the rather expensive regulator.
Thanks for viewing and comments.