One other thing to keep in mind as you plan out your system is that the solar panel’s effectiveness can be reduced significantly when it is flat-mounted - by as much as 50% of rated capacity. So if you’re counting on a certain contribution of charging when the GFC is closed, or not oriented toward the sun, make sure to factor that in. In other words, you might get more output from a Nomad that is oriented toward the sun at the proper angle than you do from a higher capacity panel that is flat-mounted. It just depends on the angles and how much time the panels are in various orientations to the sun.
I’m not currently running any solar. During driving I charge off a 10amp circuit from the truck and for now, with a somewhat oversized battery (Yeti 1500x), I can probably go 6-8 days stationary without driving. That’s enough to power my fridge (Dometic CFX3 55), lighting, recharge a few phones, and a baby monitor. If my needs change and I decide to add solar, I’ll do a briefcase system like @gwiz that can be placed in optimum sun without having to park the truck in the sun. And then the solar system can be smaller because I’ll be optimizing the angle instead of flat mounting it on the roof.