Aquariums: Thinking of building a new Aquarium! (You know those Tanin stained water aesthetic?)

Okay so, I’m wanting to hold a tank that has tanin stained water and basically gives off mangrove kind of aesthetic. The picture above is a google image just to show you guys what I’m trying to go for just with no plants, just rocks and woods that have multiple “roots”. I have the tank ready but i dont know what to put inside… its going to be medium water flow with lots of hiding place at the bottom of the tank. The substrate is going to be white sand btw. 60 galon tank.

Here’s what I’m thinking:
Chocolate Gurami
My fresh water Sole fish that I’m planning to move out from its previous tank
Banjo catfish
Whiptail catfishes
Hill stream loach
Triops
Fully aquatic crabs
Fire eel (any of those freshwater eels)

I know there’s allot of bottom dwellers, that’s why I’m thinking to not get the whiptails and fire eel… but i think the tank would look not lively enough with only the chocolate guramis. Should i not get the chocolate guramis and add a hairy puffer? (Ive been dying to get one)
But if i do add a hairy puffer, I should not add small bottom dwellers as they would be eaten…

Any thoughts on what fish i should add? I love unique weird fishes!