if you want the best you can get stay away from goal zero and there proprietary mess. Get yourself a portable solar panel kit something like 230 wats, a small victron solar charge controller, a battle born batterie, and a small inverter charger that will allow you to use the generator to charge the battery if sun becomes an issue. if youre getting 10 nights of use out of your current battery the battle born will probably give you at least 50% more. this set up shoukd never require the generator to be used but is therd for emergencies.

i set up stuff like this everyday, and goal zero is not going to give you near what this type of set up will. without the battle born batterie this type of set up is generally much cheaper.