Critique my setup

[threecharacters]

The cave on the left is actually open on 3 sides , yiu can just about see through it if you look at an angle but i didnt think about not seeing anything dying or food under there!
I have added amazon frogbit although its small and theres not alot yet, and water sprite floating aswell.
Theres also twisted vallis floating at the moment I am waiting for it to grow roots before I plant it on the back left and a java fern I'm hoping will grow tall at the back right.
Now just to finalise on stocking. I definitely want cardinal tetras, pretty sure on corys but not settled on which type, RCS then was thinking a dwarf cichlid or gourami as a centrepiece?

I'm pretty sure the RCS and dwarf cichlid or gourami are not compatible. The cichlid or gourami will definitely eat the baby RCS and probably adult RCS too. RCS might be able to survive in the same tank if you provide enough cover but you probably won't see them much as they'll have to hide to evade the cichlid or gourami, and they won't be able to reliably reproduce so their numbers will stay low.

RCS also require cooler water than the fish you want to get and I believe they are relatively sensitive to TDS. They are a moderately difficult animal to keep.