Actually, just about everything listed comes on all the Big Dog controllers plus multi axis gyros, barometers, osd and even sonar is available. dji Naza is great. So is PixHawk, SuperX and Eagle Tree. Rumor has it that dji Naza and PixHawk are getting a complete re-do by years end. They are said to be about at the end of their refinement cycle. You don't need headless mode unless you plan to do flips and fly inverted
![Eek! :eek: :eek:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
. With the KDE power you selected(check out their new props) you shouldn't have any problem lifting more than 10lbs. 20 minute + flight times shouldn't be a problem unless you plan to fly real fast with the max payload. Now, about the 3 miles on the radio. You're going to need help from one of the brains here. That's outta my league. My understanding is you get into professional equipment that requires special licensing to start getting those kind of distances. I think 2.4GHZ is good for about a mile or maybe a bit less. About the same for the FPV. Again, there is professional gear that can go far over the horizon. Currently you need special dispensation from the FAA to fly like that anyway. While you're buying and building the rest keep an ear open for the controller updates. If you can't resist the urge to buy a controller right away then go with the dji A2. At $1300.00 it's the current king of the hill. I still believe some great stuff is on the near horizon. Particularly from the 3D Robotics PixHawk.