yes, you might have more than one queen. not a big thing. since you are short on experience and equipment, i'd just dump them all in one hive. it's not uncommon for a hive to have more than one queen, or a laying queen and a virgin or two.
in the future ;) have equipment ready to go...more that one box. it's ok to keep them in whatever, but you have less chance of losing the and they will get a quicker start if you can hive them right when you get them. we have kind of a short season.
be prepared for the odd swarm that will take more than one box. for me, it has only happened a couple of times, but when you need more room, you need more room.