Congrats on a real (large) dog Gasman. They seem to run the same price range as our Greater Swiss Mountain Dog.
Here's some advice from a big dog owner. First, keep his food and water bowls at a comfortable height for him. Excessive reach
*may* lead to stomach problems.
If you suspect he has stomach problems, feed him live culture yogurt. That straightened out Mochi's problems. He gets 5 tablespoons of yogurt, three times a day. He was literally on the "Activa Challenge"
Another possible problem ( which we had ) was lack of specific breed knowledge at the vets. Be prepared to do a lot of research if his health is anything but perfect.
Since you are not cropping his ears, they MUST be kept clean. We wash Mochi's ears about every week to every other week. When we got him ( at 5 months ), he had an ear mite problem that went undiagnosed for many months. He now hates to have his ears cleaned. Get your puppy used to it so it's not a problem. We also use Revolution for heartworm and a tick collar since it controls ear mites and the other popular one doesn't ( I forget the name)
Since he's going to be as strong as our dog, I would suggest a "gentle leader" . It attaches around the neck and around the snout. The leash attaches under the snout and takes the pull away. Without it, Mochi can pull me around . I'm 6'- and 210 lbs. With it on, my 130 lb wife has full control over the dog. ( she does without it too, but if he wants to see something , he's as strong as an ox. GSMD are also work dogs)
I would suggest giving the dog the best food you can get. Not only is it better for him, it will have less filler and therefore fewer "landmines" in the yard
I've heard both good and bad about corso canes. The only bad is from irresponsible owners who didn't properly train their dogs. Make sure he's brought up with other dogs so his social skills are good.
GSMD were used as war dogs in the middle ages so they can be vicious but can also be a very social dog if raised properly. They are also fairly new to the US. Here's picture of Mochi playing with our friends Boston Terrier. he also has the gentle leader on but it's hard to see.
Mochi's only about 125 lbs in the picture. he's filled out and goes about 155 lbs now.
Once again, congrats on your puppy
Jeff