OK I think I am back now. I didnt have much to spend today but I went ahead and bought a few outlets and covers for them.
I have decided to cover the plywood box in marine epoxy and use that for my sump/fuge. So I called around and found some at Sherwin Williams for about $65, and yes I made sure it was safe for potable water. I had planned on breaking out the black paint and repainting the back of my tank when I got home but I didn't get home until late so I decided to wait a day or 2.
I hope next week I can get the the plumbing for the overflows and the electricity ran and get the epoxy. That should be about $150.