Awww I say go for it!!! I love Cats I have always had kitties and have never had one hurt my yorkies...infact they are the best of buds and play together all the time..
And I think getting a kitten is a great idea so they can grow up around your Yorkies and not fear them and most likely be BFF's LOL, a grown cat might fear them and hurt them...just get your new kitten use to you touching his feet and start triming his claws early. Mine will let me do just about anything to them, the only thing I can't do it brush their teeth they will not let me get near their month. If you feel you can't do it, take him to your vets office or a groomer and let them do it, most won't even charge you...and I'am so happy that you did research on de-clawing a cat...its cruel!!! My best friend was gonna have her cat de-clawed, I tried and tried to tell her how they did it and she didn't believe me...she thought they just pulled the claws out...so I asked her if I could come to the Vet with her so we could talk to Shane about how they did it...well thank god we left there, kitty claws intact...She told me she was sorry she doubted me, she really just thought they pulled them out, like pulling a tooth. but anyways, I'm so excited for you. good luck with your new baby kitty when you get him...and I'm sure everything will work out.