Performance Suspension Questions

[Chemical103]

I was hoping that you guys would be able to help me with some suspension questions. I am currently looking to upgrade my suspension to increase my front end ground clearance and make the truck a bit more capable for the winter months. I use my vehicle back and forth to work (all highway driving) and also responding to fire calls. Highway is obviously not an issue but with the fire department we can get some nasty snow storms and are required to drive on unplowed roads and can find ourselves doing some light off roading at times. Short story long I am researching the KORE HP Series kit vs the HP Leveling kit for my 06. I would like to go with the Bilestein Shocks all around but I was curious what the mini leaf pack that is offered with the package will accomplish. Considering the fact that it is a significant jump to rework the rear suspension as well as the front I wanted to see if it was a good investment. I am very new to HD truck suspensions let alone the performance suspensions so I am looking at KORE only by reputaiton. If anyone has any other suggestions for this type of application I am all ears. Thanks in advance.