I think you will be ok. You will probably see some aggression at first. I suggest keeping an eye on them though. But IMO they will likely work it out. There is a pair in my gallery, that (if I remember correctly) took about a week or so before they were comfortable together. However, when things get stressed in the tank, cleaning, moving things around, the female will still occationally show some aggression and kick the male out of the anemone. Once things settle down, things are back to normal.