These would be emergency queen cells so some selection is likely necessary. First capped may be a scrub queen and a later one from a hatching egg. Either way, a queen is better than none at all. The queens are a lottery as far as genetics are concerned and may be docile or vicious;good layer or patchy; prolific or slow, etc.
I think queen rearing with just a colony or two is always a bit of a lottery. With more colonies there is more choice, but you only have 'what you have' to work with. I would reduce to one or two cells as there is always the risk of a cast, depending on the strength of the colony. Uniting is always another option. We are approaching the wasp season and weaker colonies are the ones at most risk. You are looking at another month at least before new brood hatches. All a balancing act. So your choice really.
I have in the past split and had to 'unsplit'. It happens. But I reckon extra queens is good as there is more choice for uniting later in the season and two laying queens now will make one very much stronger colony later. That is one apect I like with beekeeping - often several options when enough bees.
Regards, RAB