This all looks great! And I'm impressed by the simplicity and design of the stacked Rubbermaids. I have a couple questions though...

Has anyone tried this (more expensive) option:
Rubbermaid Vertical Shed : Target
(if that link does not work, google: Rubbermaid-Vertical-Shed)

It's 72Hx30Wx25D" so the pains of training the plants would be at a minimum. I would take issue with cutting this thick plastic, ventilation, and the lights would have to be hung on the inside to be adjustable. These seem like small issues that could easily be overcome. I think the CFL lights are great and one could easily make a bank of lights from 2 of these same light strips (6 lights total) and attached to a thin square of wood to float above the plants. Perhaps a shorter version of this shed would be ideal - Suncast Balcony Box : Target

Also...

I first learned of this technique on this forum from Bodom Children Of. But one of the posts mentioned the passive intake and someone asked, "How are you keeping light from disturbing the dark period during flowering with that fan like that?" I have the same question. Why bother making a bend in the PVC if you have a hole at the top of the box? If the sun comes through the windows in your grow area (like at 7am), how do you control the light during flowering? I assume that this minimal light entering the fan-hole does not affect the plants throwing buds? ...Or else everyone would have posted about it. Has anyone had trouble with this?