The solar option is 3 or 6 of 180/190w or so panels. 6 is a second string with a second controller. Better to just order prewire - specify two pair of the largest they will do. Then have larger/better system installed aftermarket. Imho.
The extended cycle batteries are 300ah Lifeline AGM. I'd get the standard wet batterues and put the option money towards installing lithium batteries aftermarket. Imho.
Vince and Susan
2011 Tiffin Phaeton 40QTH (Cummins ISC/Freightliner)
Flat towing a modified 2005 Jeep (Rubicon Wrangler)
Previously a 2002 Fleetwood Pace Arrow 37A and a 1995 Safari Trek 2830.