Wow, $816 is very tempting. I'll be really interested to hear your impressions of the Bilsteins, I was planning on just getting shocks to go with my springs but Bilstein has a great rep and the ease of coilover installation really appeals to me.
When pricing out springs and shocks your looking at around $600 bucks for an extra $200 why wouldn't you get coilovers

As for a review The ARP stuff is backordered so the install is going to wait

I have heard nothing but good things from my friends who race and other people on this forum who have this setup if that helps you