A: Welcome to the best local site out there.
B: Fish is nothing compared to a reef tank. First 2 rules of reef tank; forget what you know about fresh water (there are very few similarities, easier just to start a new mental wiki for reef tank). Take it slow. Your tank looks great and starting in December, it seems like you are going the right pace for long term success.
Looks like you are running sumpless with a HOB filters. Careful with those. Not that it can not be done, but take care with your maintenance.