Rear tires are loaded with CaCl. Loader is La 724.
With loaded rear tires, 400 pounds to 500 pounds of Three Point Hitch ballast should be ample and this only when you anticipate FEL work. This will probably be an implement and implements vary considerably in how far to the rear they cantilever. The farther to the rear ballast is cantilevered, the more effective it is.
Why 3,100 pounds of total ballast when your total LA724 lift is a tad over 1,500 pounds and 90% of lifts will be less than max?? Tractors are tough but no use building in equipment strain before starting work.
I have GL3560 with LA805 FEL.
Air in R4/industrial tires. I carry a 60" / 700 pound Three Point Hitch Cultipacker as ballast most of the time. It is ample for 1,000 pound lifts. If I anticipate an unusual max lit, I mount a heavier implement.
I do not make many lifts greater than 1,000 pounds. Usually I split a potential one ton lift into two 1,000 pound lifts.
However, I NEVER have mud to deal with as a traction issue. After heavy rain my sandy-loam soil is ~~dry~~ an hour later.