The reality is that even the front Bilsteins are not the 100% ideal way to level/lift. It's much better than puck lifts for sure.
The problem is that it's pre loading the spring in the front when you raise the perch up. You get a little rougher ride and less spring travel. The ideal way to do it is with new shocks/struts and new, taller, springs.
But, that's also probably excessive for just a 2" level. I don't lose any sleep over it but I acknowledge that the absolute perfect way to get it done is new springs as well.