Solar on a Pop Up Truck Camper ? or 2

I'm buying a new NorthStar 850SC pop up truck camper. The dealer is installing a 170w panel on top, a 30a controller with 2 AGM batteries. Says he's done a lot of this install which is supposed to be the exact option that comes from the factory if ordered.

I was thinking of having him install a outside plug for another 100w suitcase solar panel for those times when the camper is in the shade..

Will I need to have a larger controller installed so I can run both panels, 270w total?? Or are there any flaws with my thinking????

thanks