
it depends what you intend them for. if your boy does not have a KC pedigree (i'm unsure from your post) you couldn't register the pups so they could not be shown.
beyond that though the actual process of breeding is a very complicated one with many moral requirements and ethical guidelines rather than actual rules.
a good breeder will not breed any dog that has not excelled in the area it is intended for (working or show) or can benefit its breed in some other way (for example by helping add a feature to the gene pool, helping support a breed with flagging numbers and so on- but these tend to be decided by very experienced breeders). additionally the dogs in question need to be very healthy- and that means genetically as well as on the surface, that means lots of
very expensive tests (for cocker tests there will be someone along :)). they also need to be of very good temprements, no aggression or nerves etc.
you cannot make a decision about breeding a dog you don't have yet as you don't know what she will be like physically/mentally/emotionally. she might not compliment your dog and so throw puppies that are not what you are looking for.
breeding is also extremely risky and should not be undertaken lightly. not only does the process put the bitches health (or even life) at risk but you are then responsible for the lives of each of the puppies. a good breeder will accept back any pup they have bred for whatever reason at whatever time in their/the puppies life.
i'd suggest before even thinking about breeding to go ahead and get a nice bitch from show lines (you'll get plenty of advice on cocker breeders from here!) and maybe give showing a go? see how she turns out then if your still interested in breeding you should have a good mentor in her breeder who will help you find a suitable stud and can help with the (fairly terrifying!) process of breeding.
anyway, hope this helps :)