Plants for a terrarium

Earl20

I am looking a creating a fish bowl terrarium and could do with some plant suggestions and advice.

For substrate I am going to using layers of compost, vermiculite and sand.

For plants I was considering:

Drosera capensis - Cape Sundew

Aloe Great White

Carnegia gigantea the "Cowboy Cactus"

Any help and suggestions would be greatly apprciated.