Nice job so far!!!
Looks great. I always have liked a large tank with a school of smaller fish.
Personally I would add about 20 tiger barbs, they will provide lots of action and will school well. They also won't bother anyone else if you have that many. The give a nice contrast to the neons as well.
Another thought is dario dario, the scarlet badis. You could have a handful of them in there and they stay tiny. Also Rocket Killies, I don't know the real name but they stay around an inch long. Maybe some dwarf cories as well. (now you know what my dream tank looks like :huh: )
Thanks for the video, and I look forward to seeing how things turn out!