I think your lighting should be OK. I didn't know they made 72" VHO bulbs. Maybe it's a 72" fixture? What is the total wattage you have over the tank (from all fixtures)?
I'd recommend increasing the numbers in the schools of fish (danios, tetras, barbs), as you'll get a much more pleasing fish arrangement. The larger the school, the nicer it will look, and the more natural your fish will act.
It sounds like you've already made a lot of decisions about the fish. Is there something else in particular you're looking for? Some angels might do well in the tank, and be a larger, centerpiece-type fish. What's the hardness/pH of your water like?
For the plants, as you have a larger tank, some of the larger plants would work. Sword plants are always a good choice. I personally like cryptocorynes a lot. They're easy to look after and spread nicely, they also come in a variety of greens/browns/reds for some variation. You can plant the driftwood with mosses, Java ferns and anubias species. All are easy to grow, and will add interest to the tank.