Way too much weight on the tag. I would want the drive closer to 20K for better braking (4 tires). I would decrease the tag's air pressure to 30. This will decrease the front down to 12,000. The 12's on the tag will have a minimum of 70 to keep the tire on the rim. I would go 5 over the 75 needed on the drive axle and 95 on the fronts. These pressures are for 12K on front, 20K on drive, and 5200 on the tag. These pressures are from a Goodyear chart and doubt the Toyo will be much different.
It's easy to put 2K of stuff in it if you are FT so you may end up with 100/85/70 for your pressures.
When I replaced my tires I went with 11R22.5 Hankooks on the rear as they are the same diameter as the 295's that came on the coach. Went with 315's on the front as I'm heavier than you.