is a link to the load table.
At 11920# on the front, the table lists 90 psi for an axle load of 12440#, but that is assuming each tire carries 6220# equally.
110 psi in the front is probably more than you need, but not knowing the individual wheel weights, that is the safest way to go, although you will get a harsher ride.
85 psi in the rear tires will carry 21060# which more than adequate for a 20000# rear axle.
85 psi in the tag axle will carry 11880#, also more than adequate.
I'm quite sure that 85 psi in the rear and tag is adequate.
I'd leave the front psi as is until you can get individual wheel weights, and I'd lower the rear and tag to improve the ride.