Finding a reputable breeder and making good purchase decisions for your Bengal are just one part of your equation. Proper introductions of your puppy and kitten are another. We have a great dane that lives next door. Occasionally he visits us when we are working outside. On a few occasions, he has come over and played with our Samoyed while in our fenced back yard while we sat out on our deck with his owners. Hank is a huge, rambunctious 1 1/2 year old. When I have Quasar on a leash, on my lap, while we sit outside, Hank will come and investigate. I have never seen any sign of aggression from him toward our cat, just curiosity. Quasar lets him sniff and drool on him, while I hold him. If Hank tries to jump or gets too active with Quasar, Quasar will hiss and pat him on the snout.
Long story shorter....I think a Great Dane is probably a good match for a Bengal.
Most recently, I was working in my basement and heard Hank barking outside. He was playing at the window with Quasar who was stretching in the window, in front of Hank's face. They were touching noses through the basement window. It was so cute to see. Of course, Quasar would probably not have been so confident had there been no barrier between them.
When we introduced Quasar to Kyenta, our Samoyed, K-dog was already several years old, not a pup. Good luck with your new puppy. I'm certain you will garner some good advice here from people who have done puppy to kitten intros.