I'd get beaten if I tried to pull off a 500 gal iny house, my shop however is fair game. Likely staying with led only lighting, might have 2 t5 as extras for colour. Good likely hood of auto top off, as where I am putting it has a closet that is unused. It's the 60" *26"*18" 120 .
Might have a couple fish in it ( nothing special clowns etc) just to keep a general bioload. I don't like sps for the most part. I am very good at indoor climate control ( I used to do it in a couple very large biosecurity buildings),
Even if it's just a neat rock layout that would be a help.