When you go to the local CAT scale try to do it loaded as close to your normal traveling weights as possible. Go online and get the load/inflation tables for the tires on your coach and inflate accordingly. Do not blindly just use the numbers on the door sticker as they are rarely correct for your particular load.
Over inflating the front tires is very dangerous as it reduces the contact patch and causes your steering to be loose. Passing trucks will reek havoc and windy days will not be much fun. If your coach is properly loaded you will have approximately one-third of your weight on the front axle but this varies from coach to coach. Check your coaches max front and rear axle loads as it is important to never overload either axle and a trip to the scale is the only way to know for sure.
Good luck.
:C