Your kit looks very good to me, and a good price.
We are light users of electricity while camping. We make tea with a kettle on the propane stove, have no TV along. Our two batteries are enough to dry camp for four days. No generator.
I recently bought a 100 watt solar kit for $250. I expect it will provide about 25 amp hours of battery charging per day, which may well be enough to keep us going indefinitely.
Basically, you hook the two wires from the solar panel into the appropriate terminals on the charge controller. Then run a pair of wires from the controller to the battery. You really need to have a multimeter and know how to use it to make the connections correctly. I was kind of stumped on how to get the wires from the panel down to the battery cupboard - until I took the cap off the fridge vent and realized how easy it would be to go that route. Alas, I am a bit late for a tryout this summer as it is getting dark very early now and cold weather threatens. And we have company coming to visit.
Good luck with your solar adventure! Thank you for choosing the quiet route.