Yessssss to the bottom bit. Often good quality kibble can be cheaper than poorer quality food.Start it off in stages, start by going upstairs and having a shower etc and giving him access to one place alone downstairs ie living room, restrict him to this room only as allowing him too much freedom is asking for trouble, start small and work your way up. It does depend on the dogs maturity and breed too.
Best advice i can give anyone is make sure you feed your dog the best you can afford. Honestly when it comes to animal nutrition you do pay for what you get, you dont have to feed raw but a good quality kibble. Please dont be temped by the fancy packaging you see in vets with gold writing, its usually full of tit fillers and animal derivatives
We raw feed, we havent always but the difference in my dogs when we made the switch was unbelievable and we were feeding a very high quality kibble at the time so not like we went from rubbish to raw.
Their concentration is so much better. My vet is quite good on the raw front as we feed a high quality complete but I know some vets have concerns about DIY raw as you do need to know what youre doing to ensure your dog gets the required nutrients.