Shauntell, get the hood, get the plants, you'll love them. As for fish that go well with betta most small tetra's (neon, lemon, etc) guppies, mollies, swords, goldfish depending on the tank size and water temps.
My favorite setup was based around my betta.
30g 5 guppies, 3 serpae, 3 black neon, 3 jumbo neon, 3 blackskirts, 2 mollies, 5 silver tips, a dwarf frog, and of course my Betta.
Add to that my 2 egyptian lillies, 1 banana plant, 3 amazon swords, hygrophyillia, and corkscrew grass.
The combination of the fish with the plants was stunning.