
Sadie your dogs are puppies only nobody could say if they are good enough just now. They haven't finished maturing. If a dog has a good pedigree that doesn't mean it should be bred from. Some people breed 2 champions and get a lot of rubbish ..it happens
I am not sure what terms you bought them under but I would have suspected the breeder sold them as pets and pets only. Possibly endorsed. Most westie folk endorse them nowadays to prevent people taking pet litters for the sake of having a pet litter.
The only reason you should breed your bitch is if she is really nice. Are you planning to keep something?
If it is a pet litter only I would suggest forgetting it. Let them be puppies for a couple of years. I certainly would put a bitch a risk on the basis of my groomer saying I should. Westies can often require c-sections, they can be slow whelpers not the easiest of breeds to whelp.
PS this is another thing about buying 2 together sometimes the fighting of siblings doesnt start till they have been mated etc.
I suggest you speak to the breeder of your puppies first. Get them out and get them shown. If they do well then perhaps think about it.
There are a lot of litters around at the moment and not the buyers there to buy them. I have had a few phone calls asking me to pass on enquires as a few people have puppies at 8 weeks still not sold and that is show , experienced breeders. You just have to look in the papers and some of the internet sites there are loads of pet bred puppies .