I had used up two NDR1292's in 14 years - the OE unit went karput at year 7. The second 1292 made to year 7 as well then quit. I heard many times that some people made out an RV fridge for decade without problems I guess I was just unlucky... In Dec 2016, I pulled the trigger on a residential unit. Not the popular Samsung RF18 but one works for us... Both DW and I have been happier ever since.
Here is a note for what I did back then Replaced an RV Fridge with a Residential Unit - iRV2 Forums
The Samsung RF18 looks very cool, but you'd likely need to get it in through a side window. There might also be some wood work to be done.
Your 200AH lithium is great, adding 200AH more would make it perfect for your needs. My overnight power consumption is about 120-150ah, even with your current 200AH pack it should make you through night no problem.
As you stated you do boondocking a lot, have you considered setting up a solar system as well? It could be your next project after the fridge, but one thing for sure it will be a big help for your power supply, especially in Albuquerque area where bright sky is given year round. Come back for more info on that