As requested:
I'm assuming the new owner of the tank will modify the plumbing + sump for their particular needs -- but here is some info on the current plumbing:
It's set to work with a submersible pump (Red Dragon 6.5) and has a barb adapter. This section could be replaced entirely with new 1" pipe and be adapted to an external pump if needed.
Also the interior of the doors have some residue from a adhesive that I used to attach acoustic foam. It might come off with a chemical or some sanding.
Front panel scratches: There are indeed some smaller interior scratches where the sand was on the front panel. I never actually noticed this until water was out of the tank and I was on the floor looking up. It wouldn't be noticed when the tank is setup.