I am interested in getting a newer Phantom model. I have the original Phantom 1 and have modified it abit. I have installed a DJI ZENMUSE H3-2D along with a DJI NAZA M V2. I also have a fatshark FPV antennae wired in and use a GoPro Hero3+ with leg extensions. Is it worth taking some of these upgrades and installing them on a Phantom 2? I am mostly interested in longer battery time and much smoother panning (panning down). The speed of the pan is very bad with my current setup and does not seem able to be changed. Its fast and looks 'jerky'. Will i need a newer Zenmuse or can i reuse what I have? Also, I am still kind of confused too between the pros and cons of the Phantom 2 versus the Phantom2 Vision +. (GoPro or built-in camera?) for my needs. I use the phantom for landscape photography and videography for architecture. Thanks for any and all advice and direction!