<span class="link_user">@Natrona</span>, thanks so much, I love it. Quite a bit of work but, I custom designed and built it, plumbed the rain barrel to a demand pump inside to support drip watering (handy when I need to get away for a bit), but I still mostly hand water. Air movement handled by a 16" Oscillating Wall Fan, three 9" low level fans (two blowing over the benches at soil surface), and a 16" motorized intake shutter paired with a 12" exhaust fan on a controller. Also custom built a floor misting system (on a controller) to help cool and boost humidity during high sun/heat days, but I'm not so certain it is all that efficient and am considering constructing an evaporative cooler system. Also, given I am above the 48th parallel in North American Plant Hardiness Zone 3, I have to run a heater.
All in all, a labour of love and I have done reasonably well over the past few years with my harvests. Cheers to you!