2. I never heard that you cant cut both on the same day. You dont cut in order because that is how the cut the fingernails of a meis. And becuase of the tumah it can give a pregnant woman a miscarrige.
4. As long as the bed doesnt look like it is going out the door then I think its all right, but Im not sure if its head first or feet first. The reason is also becuase of meis. (Just explaining the reasons for the people who dont know.)