I elected to go the other route first for camping off the power grid... I beefed-up everything to run for the one day/night camping run and then re-charge batteries the next morning when allowed to run my generator.
Now that I am very successful doing this I want to start adding solar to help re-charge my batteries during the day when the sun is out. I want to have at least 120WATT panels or better yet maybe 240WATTS of solar panels to support my 255AHs battery setup. When i upgrade my batteries I will will probably go to the 450AH-500AH using the cheaper GC2 golf Cart batteries.
Using solar power to me has to a have good place to store all of this power. This being the trailer batteries it just makes good sense to me to be able to do both methods of storing power in the batteries. (generators and Solar)
What happens if you are camping for several days and no sun shine...
We are only successful with lots of planning...
Roy Ken