That sized tank would be a bare minimum for 2 Angelfish. Reason being that if you raise a good fish they will get the size of an adult hand.
These fish enjoy swimming around as well and that sized tank just isn't enough in my opinion for adult fish. Like living life in a cubicle.
Edit: Tank looks good for young fish.
New to FW fish? First tank in a long time or EVER??? Need some info on keeping fish?
Start here - Aquarium Advice Article
FW Favorites right now Clown Loaches, any shrimp - SW Vase Red Mangroves