Dell Latitude Rugged 12 (7202) - WWAN installation tutorial?

I received the subject tablet as a factory refurb a few days ago which is nicely optioned - except for omission of WWAN card during build configuration (sadly, confirmed by Service Tag). My primary objective buying this rugged tablet is as an additional navigation aid while driving remote 4WD trails. I installed U-Blox U-Center (V 8.23) control panel and have that running. So, position is being tracked but without Google Earth interface where cell signals are available (obviously, not in the backcountry).

Dell new order configs shows: "DW5808E Gobi5000 4G/LTE Wireless WAN Card for Verizon (Windows 8.1/10)", with Verizon being my service provider. From that, seems I can buy a WWAN card online from USA sellers for prox US $60 (vs US $186 factory installed), so cost for a mobile broadband card isn't an obstacle.

Questions:
1) Is there an online tutorial with images (or video) on how to disassemble the Rugged 12 tablet for access to install a WWAN card? Need to determine if this is a DYI or professionally done installation.
2) Are GPS antenna wires/terminals already in place, even when not factory-equipped with WWAN?
3) Is this specific card equivalent and compatible?:
"QUALCOMM 4G EM7355 SIERRA AIRPRIME 4G LTE WWAN NGFF MODULE CARD N7NEM7355 2NDHX"

Hoping for definitive replies. Thanks in advance for any help provided...