They are both really adorable. Good luck with them.
I agree with SinisterKisses about doing research about raising siblings. I remember reading a while ago about this person who had two German Shepherd littermates that were uncontrollable together, and they had to rehome one of them. Not everyone has trouble raising two siblings together, but it must be done correctly.
I found an article someone wrote about their experience with successfully raising two siblings:
A Few Things You Should Know About Raising Littermate Puppies | Keep the Tail Wagging
You're going to have to post lots of pictures for us when you get them.