Are you considering other brands of AGM's, standard marine/rv deep cycles?
IMHO...I would make a better choice, the Optima's tend to be very charge sensitive and don't have the amp/hour reserve needed for RV use.
Are you using the original converter? Parallax?
Our OEM P-lax converter burned thru our batteries while still on the dealer lot,(left connected with no oversight).
A quality 3 stage converter is recommended for any AGM battery. We switched to this one
and got a pair of 100ah grp27 Lifeline agm's.
Werk's for us..
"Sticks & stones can break your bones...and hail will dent your Airstream"
So when is this..."old enough to know better" supposed to kick in?