welcome to Fishlore.. you'll want to find a bulb that is good for both fish & plants.. there are a lot of choices but you can check the packaging for the color temperature and spectrum of the tube.
Otos and Corys would be a good cleanup crew, at least 3 of each. For community fish, livebearers are generally peaceful, but you want to get all males or you'll have fry to deal with. Tetras are another good community fish. Check the fish profiles on the FishLore.com home page to see how big they get as adults and how many you need of each. You'll want to get at most, 29" of fish (adult size) for your tank.
A 2nd filter, perhaps a 2nd
HOB filter, a submersible filter or a sponge filter wouldn't be a bad idea.