[JustOneMore20]

I don't think you can get the filter that comes in the hoods. Getting a small Azoo filter, like Leah linked to would be my suggestion. They are small and won't cause too much water movement. Its also pretty cheap. Then, get a desk lamp to put over the tank with like a 15 or 20w bulb in it. The lighting that comes with those kits is only good for low light anyways, so if you want more plant choices, a desk lamp is the way to go.

As far as livestock, shrimp is about your only option, besides a Betta. Even then, a colony of something like Red Cherry Shrimp will eventually need something larger (for some of them). Start with a handful of shrimp and you'll eventually have more than enough. A Betta should be fine in the tank, but that's probably the only fish that would be ok.