You may want to cut the top part of the rear bump stops off when you lower the car for more clearance. I change to the gt500 stops they say they are softer, I couldn't tell the difference, but did use them and cut the top part off . How much lower are you going ? I went with the Ford Racing K...
When I lowered mine, with the help of a strut alignment level, I set the camber the same as before I lowered the car, so I didn't need a front end alignment. If you rotate the the top strut mounts 180 deg.you will get back most of the camber, then you can tweak it with the camber bolts if...