Umm no, what everyone is saying is don't make it harder than it has to be. With that said as you get into it, keep this thread alive and ask questions, that's what it's here for. As far as the headers look at Summit's, unless you have big bucks to spend, that's what I used. They are a pain to put in and you will get frustrated but it can be done. You will have a little more difficulty with power steering, I did. But they are in and work great, they don't drag over speed bumps and the like as long as you don't drive like Bo and Luke Duke.
I don't have a Duster, but a Dart Sport, same platform. I too can provide pics if you need em.