Re: After Hiving the New Swarm...
Compare the amount of bees against what you purchase in packages in terms of size, if its the same size as a package you might start in 10 frames then start off using 10 frames for the swarm. At this point, however, as they appear to be content with staying in the nuc I'd leave them alone for a few days or so before moving them. I always put a frame of brood from another hive with the swarm to help prevent them from taking off.
If the bees are covering four out of the five frames in the nuc, you will have to move them sooner than later to 10 frames, especially if a nector flow starts.
Try living life with the attitude it's not about what you want to do but what you should do!