Nice! I love the white sand. I wanted to go that route but I was afraid it would be too hard to keep clean, so I went with black fluorite instead. I love the look of my Edge tank, but yeah, they're no fun to do work in.
I'd get a power strip rather than a 6-outlet panel. That gives you surge protection and the ability to turn everything tank-related off with one press of the switch. I assume you have a timer for your light? Or are you hand-timing the photosynthesis light cycle?
Is that the stock 21 LED light for the tank? One thing people do is buy the 42 LED upgrade, Fluval sells it with the 12 gal Edge tank, but you can buy it separately as a "replacement part" and it fits in exactly the same way.
I decided to ditch the light entirely and upgrade everything, and switched to a canister filter. Ultimately I'll get an in-line heater to remove the heater from inside the tank entirely.