
Hi
Can't comment on any of your breed choices but what I will say is that not all breeders by any means keep their dogs in the house. Therefore, if you take on an older ex-show dog you will need to establish if he/she has been housetrained or kennel kept. Also, SOME breeders (not all!!) will have their own land and just let their dogs free run. Sooo, whilst they are very well trained on the leash and behave great in company their recall may be a tad dodgy!!

Just some things to bear in mind! I did think about going down this route myself a few years ago but ended up after a couple of aborted attempts in getting an 8 week old pup.
Good luck whatever you choose!