The ARB/Dometic fridges are also back heavy because that's where the compressor is so be mindful of the front tipping down when pulled out. I use the Dometic straps to strap mine to the slide and then I have the slide base ratchet strapped into the floor hooks. It's tight if you try to slide it around but the back still pops up an inch or so when fully extended.
https://www.campingworld.com/dometic-strap-kit-107879.html
How are you going to power it? Hint: join the
darksolar side with us
If I do run power to it, it would be straight from the battery and connect with one of these. I don't like the standard 12v cigarette plugs. Your solar idea is the best one, but I have to make the commitment and that can be a challenge for me.
The slides are rated at either 130 or 150 lbs. I have to recheck the specs. I would only buy a larger fridge for another cross country trip. I usually prefer a roto cooler because I like simple stuff and on most of my trips I only go 2 nights / 3 days before I need gas (and ice) anyway. I do already have a small Engel 15L fridge that is very handy but doesn't hold alot.