I would go with the larger one of the 2 you are looking at..
pull the fuse so there is no parasitic load on the batteries as it is winter and less hours of sun.
if you can raise the TV batwing and zip tie the panel to the support rods FACING South so it will get the most hours of sunshine and NOT be covered over with sn*w.
2004 Chev Silverado Duramax optioned past the max. 2009 Jayco Eagle 308 RLS 765 watts of solar, 6-6 volt batteries (696 amp hour), 2000 watt (4000 surge) whole house inverter.
140 days boondocking in 2016
211/2015, 196/14, 247/13, 193/12