It's been said a bunch...pick your posion. Are you cycling them daily or storing the trailer for awhile then using it?
It will interesting after a 2-3 years with many new folks getting lfp what the survival rate will be of said batteries. With so much mixed info being regurgitated of how to use (charging, absorb, float) the batteries.
As long as you can get the cells to balance and have your SOC meter sync to the capacity of the battery bank occasionally life should be good.
What voltage is need for "your" batteries to accomplish this?