I'm in no way an expert, but I'd see if you could find a cat to "cat test" your dog with. I have two cats and three greyhounds, and the greyhounds were all cat-tested before being offered for adoption. A dog who isn't "cat friendly" could quickly kill your cat, and you certainly don't want that. Also, a dog who is OK with cats inside can be a different story altogether outside. I've heard of many people whose cats got out, and when they let their dogs out, the dogs killed the cat. My cats are strictly INDOOR cats, and they were before the dogs ever came along.
You say your dog likes to chase cats....this type of behavior could escalate into something more.....please be careful until you evaluate your dog further!
The way they do it with the greyhounds is to muzzle the dog, then have someone hold the dog on a leash, another person hold the cat on their lap, and then they gauge the dog's reaction. Mild interest and then ignoring the cat is probably best. Some dogs cannot have their gaze broken; they are INTENT on the cat. Some just try to go after it. I have a friend with two greyhounds who would happily kill my cats; they come here and HUNT for them (they are safely locked in the bedrooms, of course). Not a pretty sight.