Honestly I think it will just depend on your ladies...my blue orp will lay in any box that is free, she doesn't care, my brahma uses the same box all the time and has a fit of someone else is in it, my WTB wants whatever box is currently occupied, and carries on in the coop non stop until it isn't occupied anymore, but my Welsummer and OE lay wherever the most eggs are
I'd just wait and see what happens 

