Ok, I started with the easy no brainer reductions:
1. Swap 40 lbs of propane tank to smaller 20lb tank. 20 lbs
2. Swap 36 lb bed mat for foam board. 32 lbs
3. Remove 16 lbs of AGM batteries & use truck battery 16 lbs
4. Remove misc box of junk 17 lbs
5. Replace 8 lbs of cooking pots to 1 aluminum pot 6 lbs
6. Remove coffee pots and broiler pan, use aluminum pot 7 lbs
7. Remove extra sleeping bag 5 lbs
8. Swap 16 lb table for light plastic 5 lb table 11 lbs
9. Swap can foods with freeze dried food 4 lbs
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Total reduction with simple practical easy changes: 118 lbs