i wouldnt add any fish at all. :( you already have a fully stocked tank and you are about to have more! are you planning on putting the babies in a breeding net to keep them away from their parents or are you going to let them fend for themselves? and just so you know its not good to keep only 2 females with that many males.
the males will harass them. i did this but i had 2 females and only 4-5 males and the males killed one of the females.
just thought i would give you some advice for next time. :)