Venue Pro Upgrades

I have the consumer version of the Venue Pro 11 with the 128 SSD and an i5 CPU.  I just upgraded the operating system to Win 10 with no problems, other than the normal operator learning curve issues.

I'd like to upgrade the computer itself.  I'd like to swap out the SSD with a 512 Gig one.  It looks like the Transcend 512 GB SATA III MTS600 60 mm M.2 SSD (TS512GMTS600) on Amazon works with the Venue Pro.  However, I've also heard that you can insert a WWAN card and get cellular connectivity with T-Mobile.  I've also heard that some WWAN cards include a GPS.

I don't know if any of this is feasible.

I also don't know if there's a bigger SSD that fits into the Venue Pro, either.

What I don't know is which WWANs are compatible with the Venue Pro 11.  Can someone recommend WWANs which will work on T-Mobile's network in the United States and which have a built in GPS?  What software (if any) is needed in order to get it all to work?

Thanks in advance,