Ok this is going to sound critical and so first let me say thank you for your hard work.
But Why use 7.x Nougat ??? 6.1 easier to Tether More stable and better on compatibility and Longer Battery Life.
For Nethunter using 6.1 would seems the bet...
Edimax EW-7811Un 150Mbps 11n Wi-Fi USB Adapter, Nano Size Lets You Plug it and Forget it, made for Raspberry Pi .. Made for ARM yep and supports Monitoring mode ;)