Good to hear that everything is working out for you. If i were you i would add just a couple of snails and hermit crabs. The longer you wait the safer it gets.
About the corals - i heard they can be pretty picky with water parameters, and also lighting. Do read carefully about the coral that you are interested in before you get it. It might save you some money in the end, because if they die they will just release more ammonia into your tank, and you do not want that now that your tank is so newly started. It could kill your fish.
In your case i would wait for atleast another month before i got any corals (maybe softies would be best), but i am far from an expert on this..... but over the years i have learned that it is good to think twice and buy once. Have patience
Good luck!