I have one stud male and one neutered male. I have heard all the horror stories of him (the stud male) marking territory and personality changes that happen. I have found this to be somewhat untrue in my case. I most only notice my stud male marking territory only when my female is in or near her heat cycle. Any other time, I don't have any noticeable problem with it. He has shown dominance over my neutered male only in chasing him away from my female when she was in heat. I think those issues are probably more of a problem when a person has more than one stud dog in the house??
My suggestion to you would be doors, baby gates, belly bands, and panties for the yorkies when the female is in heat..............and ear plugs and lots of patience for you!
Congrats on your new guy & good luck!