Hey man I see you got the brute! That's a nice one. That root picture is the sh_t! Way to go. I'm so envious of your set up there.
A couple comments:
1. For that big plant I would aim to keep the 14gal brute tote full, because it will drink a lot of that water quickly. I'm also interested to know how much water it goes through in a week outdoors.
2. If you put the tote on the ground, do you think it would help cool the root zone? As is, the root zone will tend to be the same as air temp. It might get too warm in mid summer?
3. I don't care for the holes drilled on top. I tried that and I had to change it for several reasons.
A. The roots will find their way thru the holes and dangle in the water, and then you have a hybrid DWC and risk of root disease. When you move the pot around, roots will break, fall into the tote and rot.
B. The roots will clog the holes and then it wont drain back to the tub.
C. You don't have a way to look in the tub and see how much water is in there.
D. Once that specimen gets large, you won't be able to move it, and if the pump goes bad it will be difficult to change the pump.
I've changed everything to just doing one 6" hole. All the water drains back to the tub thru this hole. I put a pot in the hole, or cover it somehow, so no light gets into the res. The plant stays on the res for 2 months in flower. I don't clean the res until the plant is done.