I haven't heard of that brand but this article might be helpful:
http://blacksheepcardigans.com/ruff/raw-diet/

I follow a bunch of cardigan blogs and most of the breeders feed raw as soon as the puppies can eat solid food, so I don't think you need to worry about her age.

I started adding raw to my dog's diet as soon as he came home (age 10weeks). It's what all canines are born to eat.

I buy the Natural Instinct - usually the little chunks as they are easier for me than the big patties. I also make up my own mixes when I can get good organic stuff on sale (my CSA provider also provides me with livers, hearts, bones, etc!) I also get beef & bison bits from the restaurant I work in (hurray for free food!)

With chicken for people as well as our pets, the "cleaner" carcasses come from organic/free range sources. avoid Holly Farms, Tysons, etc (boo hiss)

For kibble I use Taste of the Wild. They also make a good "wet" food, as does Before Grain. 

Whatever you choose to feed your li'l guy, try to avoid grains! then your friend will have healthy coat, less chance of food allergy, obesity, diabetes, etc. The other bonus is the poo is less & easier to pick up... and change the diet gradually, of course :)