I'm not a fan of the BARF diet, its got far too much bone in it in my opinion. No wolf would naturally consume 80% bone whether they ate a mouse or elephant. I also wouldn't worry too much about the veggie and supplement side of it either. Personally I prefer the prey model diet which you can read abbout here:
www.rawfed.com
Clarabella, that link above will also be good for you, its a good basis, as is
www.rawfed.com/myths
Usually I would say go to a vet, however, very few vets actually will support you in this decision. The reason? Well sadly vets aren't properly taught about animal nutrition, and instead are given short lectures by a commercial petfood company, which obviously promotes its own brands rather than natural feeding. Also, I personally believe that it is due to commerical petfoods we have seen such a dramatic increase in cancers, arthritis etc in dogs, which obviously means more money for vets, so some vets who have got wise to this realise the profit that they can make through promoting commerical feeds.