Netgear Nighthawk M1 MR1100-2A1NAS in France

Hello,

I am planning to visit France with my Unlocked MR1100-2A1NAS currently running an AT&T unlimited tablet sim card.

This has been good enough to allow me to run IRL (Biking) Twitch/Youtube live streams here in the USA. 

I am looking to either run this same setup in France connected to AT&T International plan OR buy a large GB sim card from "Free Mobile" French telecommunications company. 

Free Mobile uses Bands 1, 3, 7 and 28 whereas my 2A1NAS only has 1, 3 and 7. 

Does anyone see any problems/experience with this idea or should I look into buying the Europe nighthawk m1? 

Thank you,

Ben