Question for all you solar experts

I was thinking about adding the other panel at the open area on the left hand side of the trailer under the cab over part. When I would swing it out for usage it would provide more shade on the left side of the trailer. I really don't think that I will need the second panel since I can't run the AC by adding the second one.
I still haven't ordered the Eco Worthy controller, but I probably will next week or so.