300 gal advice

[e46er]

Currently finalizing tank specs for an 80 “ long by 36” deep by 24” tall tank that will be at my shop.
Will be visible on 4 sides and see thru from office to shop.

Either a 75 or 90 sump.
Will be set up as a predator tank I think, that will give the most enjoyment to other people who are not involved in the hobby.
I had a 250 blow out a few years back and last year set up a 180 sps at home with my old equipment so I’ve been out of the loop last few years.
I will have pumps wired to switches for water changes
LED lights (already own them)
Currently have 60-80 lbs rock in my home tank and sump waiting for this

What skimmer should I go with?
Will have a 3 drain system and an apex.
Any other recommendations?