sounds like a good deal, welcome to bikes, harleys, and the site. no the nightster handle bars arent going to be this same, a little bit taller, go with warricks from his iron and youll be set. then get some forward controls!
I would do the original handle bar, but just weighing my options since I already have the extended cables on it. I feel like with the stock bars, there will be a lot of cable hanging around. I'm thinking about mini apes or 6 inch z bars. The current height of my set up is about 10.5 inches.