@Laurie116you have a lovely place.
Just a thought, but it struck me as your approach perhaps requires too many follow-up adjustments. Making your offering to two (2) people as the default from the outset covers perhaps the most 'common' situation; a couple and/or two separate people sharing a room, but not a bed and perhaps making the price $75 will eliminate a lot of logistics on your part. I wonder if charging for a 3rd person, an odd combination, is even worth it.
The emphasis on you being legal also caught my attention, I wonder if potential guests should be so thoroughly informed, outside of just mentioning it once, at the end; including your actual license number won't show up anyway because Airbnb blocks numbers.
I adore dogs, and you are a vet (so is my daughter), the explanation of the dog reality left me with the impression - 'Thank God there are two separate entrances, in case 'Fido' doesn't warm up to you too quickly'.
With guests oftentimes it is best to not to give them too much to think about or consider.
Again, a lovely place and it is obvious you are a very caring person, just speaking from a business perspective.