I don't worry about the kennel cough shots unless I am kenneling the dogs, which rarely happens. I do DHLPP every year, which has parvo, and rabies every three.
People question the importance of DHLPP, but there are a couple things in it I consider important since my dogs are often out on the farm, on trails, and in wooded areas hiking with us. Drinking the gross water while we are out, meeting strange dogs, and wild animals is my concern with the dogs. If they stayed inside, or in town I would be more apt to opt out of of he DHLPP since I'm one of those people that question whether or not vaccines do more good than harm.