The front will definately need a camber kit with a low drop. I doubt you'll see 2" though.
This is AS LOW as the Skunk2 coilovers will go in the front. It rides very rough and bouncy. That's why I took mine out.
/members/2K3 Mazdaspeed/skunk2-front.jpg
The rears will drop good, and shouldn't have a camber issue. I put my coilovers on with about 3,000 miles on my car. By the time I hit 12,000 miles, I had to replace the 2 front tires. I had no camber kit. Please, take some advice from someone that raveled down that road...If you are lowering your car SOLELY for looks, then go for it. But if you want a SAFE, good handling car to race around with, then coilovers are not the way to go with the stock struts. Either get the JIC/TEIN coilovers, or stick with springs. Either way, you will get a nice drop, and won't sacrifice ride quality.
EDIT:Here's a good comparison...The pic I posted is the bad coilovers. The pic in my sig is the Spool springs. The drop is identical, but the actual springs ride waaay smoother...