Thanks everyone. I have scoured the Mobile Internet Resource Center and asked a couple questions over there. I bought a weBoost Drive Reach, but through research realized it only boosts a single signal and therefore forgoes any MIMO advantage (i.e. it could actually hurt your speeds). I also have done some analysis on usage and we will likely not make it on my phone's hotspot.
So I stepping up my options given the total cost of the dual setup I was considering. I'm leaning toward the Pepwave MAX BR1 ENT (which comes with 2 internal antennas for now) or MAX Transit PrimeCare and then a PoE Access Point (like this
one) and then an unlimited SIM (likely ATT or Verizon) for monthly access when we need it. This way I get the flexibility and power of cellular router (with CAT12 or 18 modem respectively) and the location (i.e. front of trailer) for the access point to the tow vehicle. I can add an external roof antenna if needed for better reception.
Thoughts?
