Cat scale analysis. Question

thanks for all the input guys. i always like to hear from experience. im still learning. after about 1500 miles of towing i like the wdh and sway control setup. living in north carolina we are fortunate to have mountains and coastline and ive towed this rig in both situations. it tows great. on a long trip my wife will take her turn driving and she feels comfortable with it also. so far we have done 2 and 3 night trips but in the near future will be doing longer trips. i wanted to get a general estimate on how much weight i can add. the closest scale is 1 1/2 hour round trip from my house so not really looking to weigh often. also forgot to mention that on the scales i bubble level checked tt and it was level front to back and side to side.