Yes, be sure to use the numbers from the tire manufacturers load/inflation tables. The same process for the rears, divide the rear axle weight by 4. These weights should be based upon the rig being loaded for a normal trip. Many folks add a fudge factor of about ten percent additional psi over the tables without problems. More than that can be problematic as overinflated front tires have their contact patch reduced and steering becomes loosey goosey.
Ignore the pressures listed on the stickers on your door jambs or the max psi on the sidewalls... while these numbers "could" {as in might maybe} be correct chances are they are not.
:C