I'm starting to think this is a troll post, but any way.
Let me get this right, you are going to drop a TC once a week to go to church, but be active so far away from the trailer that you can't return home to sleep. Sounds contradictory.
I think you need to work on why and how far you need to travel away from your base. Based on what you are describing, you are trying to optimize for the rare occasion that you will be significant distance away from your trailer which is a mistake.
Your more general use case sounds an awful lot like a fifth wheel.