Greyhounds are also proned to bloat, things you can do to help to prevent it from happening

Kibble swells once it gets in the stomach which can add the weight which could possibly cause the torsion so
Feed 2 meals a day instead of one, and wet the kibble prior to feeding(dry kibble has really no benefit to teeth, most just swallow the kibble whole anyway) this will cause it to swell prior to digesting and they will feel full sooner

Bouncing and running around after eating can cause stomach to bounce and turn and the weight of the food in the tummy can can it to stay in that position, so restrict activity to no more than a leash walk for 2 hours after eating.

There probably is not a single breed out there that is not predisposed to some thing or other or has the risk of inherited genetic diseases. If you are looking at getting a puppy I would highly recommend going to a good breeder,
if it is a good breeder, they are going to want to know about you and will want to do reference checks, they would have you sign a contract that if for some reason you no longer want the dog it must be returned back to them, they will provide a health, temperment and hip guarantee. Several years ago I went through a backyard breeder to get a GSD pup, for the first few months he seemed like the most fantastic pup in the world, but then at about 4 to 5 months of age I started noticing him become more aggressive, and it gradually got worse at 6 months I had him neutered hoping he would improve, but it did not help then I went to the vet to see if he could find any problems , I took him thru obedience training, at about 8 months I finally took him to a behaviourist what they found that he was wired wrong mentally, the recommendation was that I have him put down, it took me a while to accept but the day I seen him ram into the chain link fence to try and grab a child on the other side, I finally accepted he was too dangerous and if I didn't. one accidental slip up on my part could result in him possibly killing someone. It is not an experience I want to see another go through