I have the same tank as yours, with very similar settings (external filter+ default filter). At the moment I have 1 HUGE YWG, 1 bicolor blenny (love him!), 2 clowns, 1 chromis, 1 sixline. Also 1 hermit and many other inverts. They seem fine for now with the space available. For pods what I can tell is that I had a massive pod population some time ago, but since I had a dino phase the population collapsed and never recovered like before, even if there is tons of hiding space where the macroalgae are. As far as I understood it is better to avoid dragonets unless you have a tank big enough where you are sure they can always find pods..