I have to agree with most BFing comments here. The first few weeks will be tough, but the first few weeks of having a baby home are going to be tough anyway.
I know you said you're considering mix feeding so you can use formula at night to get him to sleep better. I just wanted to let you know that doesn't always work - a friend from my antenatal classes tried it when she was just desperate for some sleep, and he continued to wake up at all the same times he was waking up before. Mix feeding often puts you on track to simply going to all-formula, as your milk production slows down (it's all based on how much the baby demands, and if he's getting milk elsewhere, he's not demanding it from you.) I'm not going to tell you this is the end of the world, I'm just letting you know that it frequently happens that way with mix feeding.
Further to the sleep thing, I tried expressing some milk (as Gina Ford recommends, sigh) to give him a 'big' feed before bedtime, and that didn't work for us either. I just ended up giving in to the demand feeding, and honestly it just started working itself out after a while. It felt like FOREVER at the time, but it was just a couple of months iirc.
Those first several weeks are tough, but honestly, it becomes very easy. It's great to not have to get up in the middle of the night and mess about with bottles. And it is a bonding experience, as well as all the health benefits.
(I'm just saying this to give a bit more perspective. I'm not going to beat the Breast is Best drum- it's completely your decision what you end up doing. But you said the DVD freaked you out a bit, and I wanted to say not only is it not that bad, but it ends up being extremely easy once you and the baby get the hang of things.)