Update:
I purchased a Samsung Tab A 10" tablet ($180 @ Costco), two 64GB micro SD cards ($24 @ Costco) a RAM cup holder/ball mounted tablet piece thingy ($79 at Fry's Electronics online), and a 5 year subscription to GAIA ($159).
Just bought the 8" yesterday going to work with it today
I'm excited about the GAIA maps even more now