Wow I think you are on a roll,Plants look great.The pix of the AC You will have problems with it down on the floor.I live in a hot state too and we did that samething and the exhaust into the room will bring alot of condensation and it drains out of the ac on to the floor.Thats a window unit and it needs to be up higher,cool air fall down.It would be better to exhaust it outside if you can.You said the temps are 90 to 120,the exhaust will up it alot and wet too.Thats something I learn the hard way.Cause alot of mold problems in the house.But thats a good setup to control the grow area.I liked that bath tub setup too no worry of a flood.Keep us posted. Peace