Child in Temp care Elsewhere First

[Van]

You could keep them in mind for the spot and not do deposit just yet and then when you are ready to fill the spot get in touch with them and double check with them IF they still want the spot at your daycare. Give them enough time so they can give the required notice at the temp daycare.
If they don't want the spot at your daycare then you can advertized as planned...... but they may want the spot as you are closer to them.