Hi Honeylynn and welcome to Purrs. Can I suggest that it might be better to take the dog to the cats, rather than the other way around. That way they would be in familiar territory and not so stressed as they might otherwise be by the whole experience. Similarly, I think that keeping the dog in a crate might also be preferable as the cats will then be able to choose how close they get to this strange new animal.
Cats have a strong flight instinct, so taking them to a new environment to introduce them to the dog would also create the risk of them running away, escaping through a window or door that you thought you had shut, and never being seen again. I would definitely not be taking them to the dog if it were me.
I have a dog and two cats and it does work, but only if you do it with care and with a sound understanding of the characteristics of both animals ...
Good luck with the introductions!