NEED HELP ON LOWERING 91 CHEVY 3500

IM NEW TO THE BUILDING OF A DUALLY WHAT I NEED HELP ON IS WHAT IS THE BEST AND MOST INEXPENSIVE WAY TO LOWER THE FRONT SUSPENSION, IM PLANNING ON INSTALLING 8" FLIP KIT (WESTERN) IN REAR BUT I WANT TO HAVE THE FRONT THE SAME, I LIKE THE STRAIGHT LINE EFFECT, ALSO I WILL BE TOWING A 21' BOAT WITH MY SETUP ANY SUGGESTIONS OR ADVICE???

First off,u staying with those wheels ? Id run drop spindles and a lowering spring. For the rear,as long as its notched you will have clearance.plus you will want to run a helper bag in rear.u have many options for parts available