Is my fish set up okay?

I have a 75 gallon tank with two angelfish (not a breeding pair, but both are very docile and are kind of like Deb and Flo from Nemo; always staring at their reflection, and kinda clueless). I also have one rescue betta, he's a spade tail, and he doesn't even flare at his own reflection. He's very active and adorable. Then I have two fantail goldfish who keep to themselves. They're docile to the extreme and really sweet fish. I also have one bristle nose place, who, yet again, keeps to himself, and three golden mystery snails. The bottom substrate is black sand, and I have a very large filter. There's ten live plants, some caves, and I clean it regularly. Is this okay? Thank you!