Re: What to do with "extra" queens?
I would start them in nucs and see how they do. If she develops an excellent nuc, then she is an excellent queen and worth every penny for a good nuc. Just don't be shy about culling the weak ones and replacing them with a new queen. Just be selective about which ones you're willing to sell. Like you said, don't sell anything that you wouldn't be happy to buy. I raised my first queens/nucs this year, and some of them looked so good I was quite unhappy to let them go.
Once the bee is inside, Mr. Veil is no longer your friend.