You have options on lowering. It depends on the amount of work you want to do.
Keep your seat but just take it to a place that will do motorcycle seats. Have them take out half the foam.
You can also get short shocks that are about 2 inches lower. Together you net about 3-4 inches.
Another option much more involved is konging your frame.
You basically hack the frame to lower the seat while leaving the suspension geometry untouched.
http://konga750.blogspot.com/2008/08/konging-frame.html
The ride IS the adventure. The destination is just to get gas!