Oops, misunderstood your question. Don't think I have ever dealt with changing the ride height in the front before, so I'll do it now.
As a general rule, if you lower the rear one inch, you should lower the front the same amount. This will keep the front and rear of the bike in the same aspect as before. The simplest way to lower the front is to raise the forks above the top tripple clamp.
As for balance in the suspension, as a general rule, if you take the bike of the stand, put your foot on either foot peg and push down, the front and rear of the bike should both go down at the same rate and the return to the extended position at somewhat the same rate. That's the general rule, and adjustment to even the front and rear is done with the adjustment screws first (assuming you have springs that are correct for your weight in both front and rear. There is a lot that goes into balancing the suspension, and the fast your ride, the less you rely on balance the front and rear as tje bike sits idle. However, this is a great way to start with a new bike before you begin to adjust anything.
Rick