What fish can I have in my new betta sorority tank and is my new tank big enough?

I bought a new 30 gallon tank a few days ago and it is cycling now so I’ll let it cycle for 6-8 weeks. It’s set up and has natural aquarium sand and all live plants and driftwood etc. How many female bettas can I have in the tank (If the tank is big enough) as I want them to have space but still want quite a few.. and what tank mates? I was thinking neon tetras, zebra danios, a few guppies and 1 or 2 bronze cory cats and 4 peppered cories. What else could I possibly add? Those fish are just some ideas