I guess I'm seriously confused at this point. Will leave it to you guys.I mean, generally speaking, two backups in the field are good enough. One on the iPad and one on the wifi drive. I understand what you're saying, the camera SD is a third backup.
BUT .. so wait up @MrMister111 your wireless drive doesn't have it's own spinner inside? You have to actually load in a separate MicroSD card? Not sure how much a 128GB costs these days but I think you may be better off getting a RavPower (39.99) and a 1TB portable (39.99). 80 bucks gets you 1TB vs 128GB and it does a whole lot more … powerbank, wireless extender/router etc.
Yes the wireless drive doesn't have internal memory, just a microSD slot.
So the plan was take pics on Digi Cam, remove microSD, put in wireless drive, copy to iPad, back in Digi Cam.
This means that I have pics and vids on iPad and microSD as backups. Can also view on a nice big screen rather than small 3" camera screen.
Reason thinking of a 128Gb was to stop swapping, maybe getting a new Digi Cam with 4K so more memory needed, and maybe try he 128Gb might not get full so I wouldn't have to format it and still have the 2 backups. They are about £30 at mo