First general question is why do you want to breed him? Other than that if he is a good representative of the breed he needs health clearances. You should be able to check with your breed club to find what goldens are prone to. Not my breed but probably hips,elbows, heart, eyes and thyroid at least.
Pedigree indicates what an animal should be. Conformation indicates what an animal appears to be. But performance indicates what an animal actually is.
I'm hoping you're a member of a bunch of Golden Retriever-specific forums and groups. Please pose this same question there. I'm sure someone will be willing to mentor you in Golden Retriever breeding...how about the breeder you got your boy from? Breeding is a path not to be taken lightly if you love the breed and are in it to preserve and better the breed. Definitely not something you'll make money on any time soon if you do it the responsible way.
I love TP but it's not the place for serious, responsible breeders to gain breeding knowledge. So much needs to be considerede before a breeding path is taken.