To the OP, those extra pages are exactly for your situation. It should not be a problem.

To SF1K, I don't know if it will be a problem or not, but if you decide to get it fixed pronto, I think that the San Francisco Passport Agency will sew new pages into your passport while you wait by appointment only if you can prove you are traveling within the next two weeks. I seem to recall someone mentioning a $60 fee.

The other option - which I know of only secondhand - is that if you can get into one of your countries first, I hear the consulate or embassy abroad will do it in about 15 minutes for free.