I used the Chi for about 9 months, it is very good for a Betta. I also had dwarf shrimp. It has a small filter The light is ok but I have always used a table lamp next to it to assist is adding light.
Here are a couple pics of mine, I just switched it over to a nano SW tank which will have some inverts in it.
Here I had a pair of White Cloud Mountain Minnows for a couple months.
There was Anubias, Java Moss Staurogyne Repens, Guppy Grass, Ludwigia repens x l. Arcuata, Dwarf Vallisneria and Java Fern,
The pic above has a stone with Subwassertang.
I think the Celestial Pearl Danio aka CPD, AKA Galaxy Rasbora might be a good option with some adult Dwarf shrimp, like Cherry Shrimp. I would recommend a cover for the tank, as sometimes the little fish like to jump, and it might help save a fish life. Maybe 5-6 CPD.
As mentioned, the filter is small and you would need to feed very sparingly, and or do lots of pwc.
Hikari Micro Pellets are good, but you need to rub them together and make them even smaller for the tiny guys like Boraras Rasboras aka Chilis and CPD.