Restoring used tank

Hi guys,

I picked up a used 155 gallon bowfront saltwater tank that I plan to use for my discus. So far I've done the following:

1) I took off the two overflow boxes and I'm left with two sets of holes on the bottom of each side, two 1 inch and two 3/4 inch holes that will be capped off using bulkheads.
2) Cleaned the mineral built-up (There seems to be a lot of permanent damage to the glass on the back and side panels from the minerals, which I can live with)
3) I stripped all the silicone that is visible in the tank and will be resealing it this week.
4) I bought two 24 inch bar clamps to brace the tank as one side is cracked.

In your opinion, is there anything else I need to do to properly "restore" my tank? It will not necessarily be a "display tank", but I like it to look good and be as safe as possible for the fish.

Thank you in advance for your help.
G