I asked a similar question before... apparently you get about 45-60k miles off shocks and should replace them while your in there.
With the sportline drop you will probably need
camber plates, everyone likes maximum motorsports 4 bolt.
Everyone seemed to recommend kyb adjustable shocks
Note: lots of people complain of rear spring sag on sportline (the 2" drop). I'm going to get the pro kit as nobody complains about it and you probably won't need
camber plates (another $150-200)