Now that we're back from server maintenance...
Ordered pond shield. Gonna sand/clean/wash/rinse/sand/clean/etc.... until it's spick and span and then lay it down. It won't seal to silicone by my understanding, so I'm going to avoid putting it on those seals. Which should be easy enough as I only sealed the front.
Next decision is if I want to reinforce the acrylic with a small 1x2 or something just to help prevent bowing. I'm sure it doesn't need it, but if this is going in my house, in our game room, which has hardwood flooring, a little extra reinforcement will definitely help me sleep at night.
Also figured out the easiest way to filter this baby, and what I'm probably gonna go with:
Main filtration- Laguna Pressure-Flo 3200 + internal pump moving 2900 gph.
Secondary - Hook up some sort of planted refugium (possibly 40g breeder) using the external overflow box that originally came on the tank. This will be dealt with later once we get it up and running. But since I can't have plants in the main tank, I'm hoping this will at least help a little bit in keeping the nitrates down.
My second lesson learned from this build: Do things in the right order. Looking back, I should have taken the front pane out, dropped a pond liner in there, put the front pane back on, sealed it and called it a day. BUT, hindsight is always 20/20.