Relative newbie BR1-ENT Sim/carrier question

Just finished install of BR1-ENT in our RV/mobile office. A bit lost by the SIM/carrier options. Looking for a reasonable solution for the following:

Pay as you go - vehicle makes intermittent trips with potentially long delays between.
10+ gig/month data usage when in operation
4G LTE will fallback to 3G
Ideally usable in both USA and Canada. Often rural.
Could certainly use dual sim for cross border. (One USA, one Canadian).

Any advice much appreciated!

Just get a SIM card from each country and turn off data roaming feature. This will help the Pepwave device to decide which one to use.