Diapers - love the concept of cloth diapers, tbh, but will be going with disposable, as I don't have the money for the upfront cost of cloth.
Breastfeeding - I feel like it's an important bonding experience, so I don't see a reason not to unless it's a physical impossibility. For instance a friend of mine's body simply did not produce breast milk so she had to formula feed.
Circumcision - I really don't have an opinion. It's supposed to make things easier hygiene wise. My husband wants it for our little boy and I have no argument against it.
Co-Sleeping/Baby Wearing - no to the first, yes to the second.
I toss and turn a lot in my sleep, so does my husband, plus we're both bigger people. Doesn't leave much space for baby and I'd worry about one of us rolling onto him.
I plan on having the baby with me while I work, so the whole baby wearing concept is one I love - That I can have that contact but still have hands free.
pacifiers - In moderation. I cringe to see it used as a first resort to quiet a baby down, but there are some situations where it can be a lifesaver. Again, since I plan on having baby with me at work, I'm sure there will be busy times when I need to quiet him down but wont be able to focus my whole attention on him.