Hi Ethan,
Since no one has replied yet, I did want to offer at least one clarification. The BR1 only has a single cellular radio, so although the Peplink eSIM can give you access to multiple networks, your BR1 will only be attached to one network at any given time. You probably already understand that, but I see your comment about “using that spread for bonding” and just wanted to be sure that was clear.
You should be able to use that single cellular connection to bond with Starlink though, if that’s what you meant. I’ve found that to be a good combination to help smooth some of Starlink’s intermittent blips.
Regarding the scheduling, check out this thread: How to use Time-Based Configuration (aka Config Scheduling) - Knowledgebase / Tips and Tricks - Peplink Community