It's important to define your goal to yourself beforehand. Are you looking to fund a cool project you just want to see exist, or is it profit? I imagine most people are somewhere in the middle of those two, but it's important to know where you are before you sit prices and goals.
One thing that I got out of this article that I really appreciate is the early backer concept. One of the benefits of kickstarter is that it is a bit more community, and people are forgiving of mistakes- the early backers even more so. Something that people may want to do in the future is offer to ship to the early backers first so that way if there are problems it's discovered sooner and it effects a smaller group of people.