After a week or two, you could add the pair of clowns, then a week later a wrasse. That is where I would stop. I would forget the anenome until your tank is more mature and stable. Clowns do not need them and its a 50-50 chance they will even snug up to it anyways. If the water is not perfect, or the light or current they will die and when they die they can crash a whole tank they get that nasty when they croak!