I'm not an expert, but that is exactly what I use for doing live sound for bands, and what I'll power my E-rig with when I build it this summer. 100' of 6-4 SOOW cable, to a breaker box. The breaker box has receptacles wired to it so I can power speakers, amps, lights, and whatever else I need on stage. In your case, the breakers would go to your various circuits in the brew rig.
I'll attach pics when I get a chance...
I'm sure I'm begging for trouble, but I'll say it anyway. The only difference between a 110v extension cord and a 220v extension cord, is the number of conductors, their size, and the COST! Go to your favorite home store and pick up some "SOOW" cable. It's rubber jacketed, water proof, and flexible. There are several online calculators that can tell you what gauge wire to use for your load, and the length of the run. Just put the appropriate 220 plug on one end, and terminate the other end in your distribution box at the sculpture. Then you can add breakers for each circuit there.
As for the landlord, don't worry about it. ASSUMING YOUR RIG IS WIRED PROPERLY it's no more dangerous than plugging in your TV. I've never hired an electrician to plug in my TV. Or my range for that matter.
That said, +1 on paying your renters insurance. You never know when the garbage disposal is going to start on fire.
And don't touch the shiny parts! It sucks...