That is going to be killer. Keep pics coming!

Keep in mind the water needs to be changed a few times per week minimum. I have a filter on mine and still need to change 2 to 4 times a week. But I do have 2 WDs in there. With the large cat litter pan I have my water it, it is just big enough that I can get it in and out full of water. Any bigger and I'd need a new plan - like the drain plug idea. But drained to where?? Right now I just take the pan to the next door bathroom and flush it. Then clean it and fill it up and put it back.

I feed mine out of a large alum pan (cheap dog bowl from Walmart). It is at least 12 inches across with 2 inch sides. Holds in the dubias and supers just fine.