Is this list of fish ok to live with?

Bettas and Gouramis cannot be put in the same tank. They are very closely related fish and will fight if put together. I would suggest skipping the Betta and just getting the Dwarf Gouramis. Also you may want to get a couple more Cory Cats because they really like to school. You didn't day what size tank you're planning one getting, but I wouldn't do this in anything smaller than a 30 gallon.