OPTIMA is a very very very bad choice for a Motor home or trailer.> Very bad.
Here is why
First. of all the battery options save "Exotic" it is the most expensive
And second. they have only 60% of the capacity of a standard battery of the same size.
A far, far, far better choice is the LIFELINE AGM.. This is the cadillac of AGM batteries..(Optima is an AGM by the way) so you get over 50% more capacity (and weight) for the same footprint. and about the same price Just make sure it is a TRUE Deep cycle, not Marine rated.
Personally.. I prefer the lowest cost option (A pair of GC-2 Golf car Flooded wet cells) but. that is my preference.. But you'd like an AGM, epically a Lifeline, much better than that Optima.