I'd like to get an iPad mini4 to use ONLY for flying my P3P. I don't cache the video and will be putting the videos from the sd card onto another device. The only addition I would be making is adding the Airnest app. Can I save some money by getting the 16 gb model instead of the 64gb one? Whatever one I get will have cellular if that makes any difference in gb's needed. Thanks for any guidance you can provide.