Over the winter I plan to install 4-100 watt panels, 3 more deep cycle batteries and wire in a inverter. What is the most weight I should have on the roof of my camper? I have an AC already and worried about stressing the lift system. here is the panels I am going to use. https://www.amazon.com/Watts-Solar-Panel-Battery-Charger/dp/B01HHDC6NQ/ref=sr_1_6?ie=UTF8&qid=1478814210&sr=8-6&keywords=100+watt+solar+panel I am also looking to hard wire the inverter in. I am considering going with a inverter and charger combo so that if i lose power, or if the voltage at a campground drops below the limit it switches to battery automatically. I would run everything except the AC through it. It also greatly simplifies getting inverter power to all original outlets and I have been reading that is an area many people struggle with. I am very surprised that I have never found anyone that uses these in a camper. is there a reason why? Here is the inverter I am thinking I will use. https://www.amazon.com/gp/product/B0007NOUBA/ref=ox_sc_act_title_1?ie=UTF8&psc=1&smid=ATVPDKIKX0DER The extra charger amperage would be nice to charge the battery bank over the stock charger. I may pull the entire original charger-fuse panel out and replace with the inverter. it would be very easy to add in a small fuse block for the 12 system and breaker box for the 120 volt system, and I'm sure still give plenty of room for the battery monitor and solar controllers. What do you guys and gals think?