Not sure what a wcm is exactly...
The clown loaches get to big for the tank im afraid, they require a 550+ liter tank, and about 6 of the same species.
I dont know a ton about gouramis but i do know they will fight so i would have a lot of decor that breaks the line of sight through out the tank. Idk if you should have dwarf gouramis though.
So i would have maybe 10 panda cories, and maybe a separate school of cories or a school of tetras.