These kittens are so very cute and I am sure will make good pets. However, there are so many homeless cats and dogs, perhaps spaying mom after tending to her brood would be a wise decision.
I also used Dr. Bimbela two years ago and have been very happy with the results and the service provided. I have two friends who have used him and they are also well-satisfied with his work.
I did schedule an appointment to interview him and see "before and after" samples of similar surgeries. I think you have to do this in order to select the right doctor for you.
Good luck.