Mini I pads are even better as you can slip them into almost anything.
But I would require to use reading glasses for the Jeppesen plates on the iPad mini ... Luckily the same applies to our operations manager and therefore we got large enough ones for us over-50-year-olds
Absolutely no problem to find a space for them, they are thin enough to fit in the side pockets together with the checklist.
The electromagnetic interference testing must be done by an approved maintenance organisation (avionics). In our case, they sent a technician who did the testing in our hangar. Takes between 30 and 45 minutes per aeroplane.