Well, if you lift it higher, it's just going to move your axle further off center...that's why you'll need an adjustable track bar with any lift that you install. KORE products give your truck a tight, sportscar like feel and you're already getting Bilstein shocks with the deal.
Here's a pic of my truck with the KORE Chase system...you'd be getting the same front springs and mini packs with the HP system, just different shocks and no steering stabilizer or end links.
These are both before and after shots.
My 35 Toyo's slightly rub at full lock on my upper control arms...partly due to the side lugs on the tires. I run stock wheels. If you have a set of H2s or other wheels with better backspacing, you'll have no rub at all.
No only is the KORE kit less expensive, I think you'll be happier with it.
Just my .02.