Threeaces, thanks for posting all this info!
It certainly appears you went into this with your eyes open. Your weakest link were the tires and you have that covered with the 19.5’s.
Interesting that Artic Fox (AF) advertises the empty weight on your 811 as 2,873 lbs. Your AF 811 CAT scaled at 3,900 lbs. empty, with no water or gear. Those who would have run with the usual advice of adding 1,000 lbs. to a TC's empty/dry weight (as advertised by AF) would have still been underestimating their realworld weight (with water and gear) by over 1,000 lbs! So glad we have forums like this to get past all the smoking mirrors.
We have the same truck as you. Although we prefer the amenities in the 865 (weighs ~300 lbs. less than your 811), we're gonna pass and look seriously at the Northern Lite 8-11 SE. A bit more money, but they CAT scale at 3,000 - 3,100 lbs. with an a/c (optional on the 8-11), batteries, propane, empty tanks, and torklift hardware. That gives us 900 - 1,000 lbs. for water and gear based on our truck’s RAWR and GVWR.
Enjoy that 811!!