That's a lot of AMG's! Where do you have those stored? That's got to be close to 1000lbs. Gives you 800 usable amp hrs.
If you are going to Lithium I would suggest you check out this video. Very similar to what you are wanting to do. https://youtu.be/Pz1Qn5hMkCA
2017 Dutchstar 4369 Spartan Chassis, 2000W Solar, 1200AH Lithium Batteries, Active Air
2019 Jeep Rubicon, Roadmaster Sterling, AF1