I pondered this dilemma for a bit myself. Decided to go with a huge battery (DEKA) and will be adding solar to either run the frig, or top off the battery, or both.
As with most mods, I wasn't worried about if the battery fit in the stock location, I chose the battery first, then did some minor mods to make it fit. Got one with a bunch of reserve.
For solar I will be going with the GoalZero briefcase panel, I like the protection aspect of the design when it's stored. I plan to get 2 units so will have 60 watts or amps or something, I get very confused and have slept since I made the decision.
In the future, if I want to go with the belts and suspenders AND another safe guard, I like the idea of a small dedicated starting battery for emergency use only. I've not researched that, and probably won't until well after I've rigged up and tested all the solar stuff. Field testing, very important