As for the draw, at this stage I don't think it matters who we face. I remember watching juve during the capello days lose to lesser teams like arsenal and Liverpool. I think that there are sometimes advantages in facing a 'better' team on paper, and they should be weighed against the obvious advantages. At the end of the day, our best game would be Porto or gala but I wouldnt at all be upset with drawing barca or bayern. We're going to face those teams eventually if we want to win the whole thing.
Other than the extra money, there is no difference between facing them now or later.