i second that, 30 mins a corner with hand tools
suppose it helps to have done it before
in any case, might want to raise the car up a bit, and without a doubt, get it aligned as soon as you're done. 2.5 fingers is a good target to shoot for or you'll be bottoming out the shock, which isn't good or safe. also, dropped any amount, you're going to have a lot of toe that will need to be corrected by an alignment. hopefully you bought longer bolts and washers to space out the rear upper arms, or you're going to have an assload of negative camber in the rear to deal with and the alignment shop will try to sell you a more expensive solution