You might want to lower the front end the same and keep the weight ratio front-to-back the same, otherwise you're shifting a lot of weight to the back all the time, especially taking off and in corners.
Get some good shocks, like Progressives that will take a better weight load. I have an '01 883 XLC and the stock shocks were cranked to their stiffest and the shocks would still bottom out. So don't go cheap on the new shocks. Like one of the recent columns said - It's the frequent passenger that's going to determine a lot of what goes on that bike (not to mention what life at home is going to be like).