I would put a combo albino male to those hets . Definitely another pattern changer, or dark morph to get some hot contrast in the albino. Albino black pastel male, or albino enchi male to breed to those females.

Since your question is about the female, I'll say meh to the harlequin gene. I haven't seen anything that impresses me much to be honest. Just a subtle morph that hasn't proven to be super fantastic (to me) yet. I personally wouldn't spend extra for a combo male like that. Maybe just getting a black pastel het albino female, and using your saved money for something else.