I was considering this. I changed my mind though. The OEM ZCP damping is actually pretty good. I would go with the GC setup. The OEM ZCP EDC front struts can be had now for just under $600, a little more than the Bilstein shocks.
I have seen great results with the GC setup.
I will just get new dampers when mine wear out. I am at 30k miles so far and probably just at the half way point of life in the OEM dampers.
Dave