Im not sure how bostons are with cats ... they are terriers and to be perfectly honest im wary of all terriers .... I have two boxers with my ten cats and have no problems at all.
Have a look at the breed specifics of the bostons and if they are okay then go for it. Prey drive etc
The main thing to remember is the cats are going to hate you for a while , and they need to know where they are safe from this "mutant" that you are allowing to invade their space.
Start your puppy with puppy school as soon as possible ... a trained puppy is easy when dealing with cats.
Do the introductions slowly and within a short while everyone should be fine.
My cats and dogs love each other .. its great to see
2 boxers Miki & Monty
Boy Cats: Tucker,Freeway,Tyson,Copicat,Mike
Girl Cats : Magic, Garfield, Buggie,Lexie,Spike,Ginger,Blue,Spooky,Rotten, Trouble
2 Conures,2 African Greys,1 Black winged Jardine