Darn it ! Where is Alli!!!
She keeps angels and keyholes!
Dwarf gourami and angelfish may or may not mix. And angels just as gourami can get extra nasty if they breed. Specially the angels in that space.
How big are acara? and do they eat small tankmates? I hear that acara in general are kinds aggressive and large. Which means your seemingly large tank can get real small quick.
Cichlid SHAPED fish shouldn't register with any type of gourami as far as their little issues go. All need to be away from fin nippers becuase of those whiskers which are more than decorative in gourami.
So a 5 pack of dwarf gourami and the keyholes SEEMS like a mix. But I think it could bore you and you'd end up adding that one fish more to make all heck turn loose.
A handful of gourami species get kinda nasty to other highbody fish if they decide they are mutant gourami. Your blue adn two spot (as well as the morphs) are you larger gourami that can sometimes be a pain. Most other large species (moonlight, snakeskin, mosaics -ie pearl) are pretty mellow fish.
I would decide which continent and make it a biotope. Then you can find fish that will mix easier..... the acara wil be big enough and they do come in a lot of types.
showcase them adn then choose the neighbors that specifically suit them.
Gourami are not naturally exposed to cichlids and that is the ecological nich they fill at home. I think the only natural asian cichlids are
SW.
Though it is a huge Family and Genus and I know little about them, I do know that my grandfather NEVER caught any where the gourami and betta were wild caught.