Hi Vikki
If you are just wanting the supplement the kibble with other foods then, yes I'd say go for it.
When we got Beau from the breeders at 8 weeks, they already had him eating:
kibble
raw meaty bones - chicken necks
meats - minced beef, lamb, chicken
dairy products - milk, cheese, cottage cheese etc
Beau is now 20 weeks old and I've had him on a primarily raw diet now for several weeks. He is doing very well.
Do take it easy though and only introduce one food every couple of days. That way, if something makes your puppy sick or gives him runny poos you will know what it is.
As Karlin said, if you are wanting to move your puppy over to a complete raw diet, then you need to read up, as it is more complex than just feeding one meat source, or meal alone.
I've recently read & reviewed here "Give Your Dog a Bone" by Ian Billinghurst, and I've also purchased (yet to arrive in the mail) "Grow you Pup with Bones" by the same author.
Just be aware that if you go down the home prepared route, you need to offer a very wide range of foods so that your puppy gets all his nutrients and during the growing phase it is important to get the right balance of proteins, vitamins & minerals.