I agree with Vaughn about the CO2. To be safe, at least install a DIY CO2 and a drop checker (as Vaughn has told me before

and you will have great success)
as far as plants, I like ludwigia a lot. It seems like the only thing I can't kill, and as long as it has CO2 it grows pretty fast even in a low-med light aquarium. One of my favorite types of ludwigia is Ludwigia peruensis.
Just remember that high light = high maintenance
-Nerb