You mentioned jag cichlids earlier too. The 180 would be perfect for a big solo jag as well.They are nice fish in all honesty right now I can’t decide between getting a Midas or Oscars or Jardini
Do what you like of course, i also love the jardini, but i have resisted keeping them for a long time simply because my tanks were not large enough. Once they get large they really need space to thrive. I admire you doing your research and exploring your options beforehand.