Ok the bumblebee gobies are brackish fish. So get rid of those for sure. You should have 5-6 Khuli loaches, but you wouldn't really have enough room for those. If I was you this would be my list
1 banjo catfish
3 Khuli loaches
5 long finned blue danios
and a pair of rams. I don't know what kind you wanted but I would go with blue rams
I'm not even sure about the banjo catfish, he should be ok. They max out at 6"
I'm not sure but I think you would be safe with this list. I don't even know if I would bother with the Khuli loaches if you only going to have three. They won't be as active or happy. Maybe ditch the Khuli loaches all together and get something else? It would make room for several smaller fish, maybe some tetras? Guppys? maybe even some platies.
I know guppys sound boring but they are really cool, and very colourful. Or possibly some endlers liverbearers? I just figured with guppys you could have way more. And a wide variety of them.