... So I've modified the U-bed™ idea. I've found a 78"x78"x78"(6.5' cube) tent that'll fit in an alternate space I have if I move a bunch of stuff around... Throw a 2'x4'x1.5' fabric bed on each side of the tent, one in the back, and that's 2.5'x4.5' of walk space in the center of the tent. This also leaves the back bottom corners open for air flow to get in, and increases grow area/soil surface area from 11sq ft(150 gallon pot originally) to 24sq ft, and nearly doubles capacity to 270 gallons.