How many husbands are too many and how few wives is too few? /u/SayHiToTheQueens

I am in a poly household; we are three husbands and one wife. We all have sex with one another including the wife with the husbands and the husbands with one another. I would personally love a second wife but the wife isn’t ready for that. I think three husbands is too many. What do you think?