I had a beautiful black cocker spaniel,tiny,about 11 pounds,tiny for a cocker I thought so many times about breeding her so I could have another just like Amy,but even if she's Amy's pup she wouldn't be just like Amy. We had so many requests to bred her from many people who saw her.
I never bred her though,and when she died ,I still kinda wished I'd had a pup from her.But I didn't want to take a chance on her health. Many years before we did breed one of our cockers Buffy,just once,she had 5 healthy happy pups,all adopted by friends,except one,we wanted to keep. Einie was such a sweetie,at 9 he developed CHF,he lived to be 14 years old though.He was blesssed w/ the most amazing and affectionate nature,we were so lucky. All our pups had great personalities,since we played w/ them and socialized them and didn't sell them until 14 weeks. But breeding changed Buffy's personality,she wasn't the playful pup she was before breeding. She just wasn't as affectionate like she was before breeding.
Worst thing was 2 of the friends who adopted our pups ended up getting rid of them,too busy for a dog,never availed themselves to our offer to pay for spay. They never asked if we wanted them back,which I would have taken them back in a heartbeat,no matter how old they were. They were too embarrassed to ask us to take them back. I vowed never to do it again,for friends...
So I vowed never to do that to Amy or our Amber who were healthy but we didn't know what might be lurking in the genes. This was 27 years ago,before we knew better.
I know the temptation,I understand wanting another "just like the one you have".But seriously,please consider a rescue or a shelter,you'd be saving a life instead of bringing one into the world that might end up being given away....