After flying full time with a full size iPad air (not a single issue, ever) I've decided to get a mini for travel purposes. Not knowing much about Apple products, what level of mini do I need? It will not be used for anything but flying, so it will have about 4 flight apps and that's it. I'm assume the lowest amount of memory available will suffice just fine for flying? I also think I'll not get the cell signal enabled one, just wifi enabled, then use my phone as a Hotspot for mapping. Doable idea? Any ideas what one will cost me? Thanks in advance.