I don't know much about them except that a young women from Phatmass entered there several months ago. You might pull up some of her old threads (her name was PassionHeart). She probably had some good information on the community in her threads.
There are a LOT of Dominicans/Dominican-lovers around here. They will all suggest a different community to you. I visited the Dominican Nuns in Marbury, Alabama, and they are VERY solid and traditional. They use a lot of Latin, and have perpetual adoration insofar as is possible, as well as perpetual Rosary. I can put you in touch with them if you like, and you can pull up threads on them as well. There are other cloistered Dominican monasteries in the US, but not all of them are Rosary branches.
I do believe Buffalo is quite solid but I don't know how traditionalist they are, per-se. The Dominican Rite is, I believe, different from the
Forma Extraordinaria, or so-called "Tridentine" Mass. It might use the form of the Tridentine but it is not the same I don't think. It is not in widespread use anymore (the Dominican Rite) but I don't think there is any inhibition in bringing it back at this point. There are quite a few members here who are much more qualified than I to answer this though.
Best wishes