Labradoodle & Goldendoodle Forum
I agree with F, this belongs in a breeder's group. But my question to you would be, was Izzy sold with breeding rights? If so, I would think your breeder would be the one to mentor you on sires and anything else to do with breeding your dog.
Most of us here are pet owners whose dogs are spayed or neutered and who wouldn't dream of breeding their pet dogs. Here are some guidelines that we recommend anyone purchasing a puppy should require of the breeder. You may want to take a look at them and be sure you can meet these requirements before deciding to breed Izzy.