Longfin Zebra Danio (School)
Cory (Corydoras) Catfish
Was kinda thinking about doing a Cichlid tank as well, but not sure…
Although the fish you chose arent too exotic, I think your current list is more to my style... what I would do:
Angel Fish - perhaps some Altums
Tetra’s (school) - yes, rummynose and maybe cardinals, several hundred (not kiddin either)
Gourami - maybe a large group of Pearls
Clown Loach - how did you guess, lol... probably 2 dozen or so
Plecostomus (Bristle) - several, or depending on you plant situation maybe some of the larger more exotic ones
Otocinclus Catfish - sure, a few dozen
Cory (Corydoras) Catfish - if you have space left after clowns and plecos, then I might add a large group of sterbai
But to be honest, when you get so big plants become a hassle to do. Well perhaps low tech would work. But on such a tank I'd love to take advantage of some larger fish that wouldnt be too good with plants, and also much easier to maintain. Maybe make a smaller refugium that a sump pumps into and have the plants in there for supplemental filtration
But in something like that I'd love to do something like stingrays with a nice sandy bottom and maybe some geophagus, or perhaps lots of rocks and make a native fish tank, catfish, bass, panfish, something like that.
Keep us posted!