Legacy struts will lower the car up to 1.75". That's what I got. Using legacy springs I think you will have to swap the top hat to fit the springs and you will gain another .5" or so. Be sure to check the tire/wheel clearance with the front inner fender if you go more than 2".
As for wheels: Offset should be around 45 to stay within stock fashion. If you go with a larger diameter, make sure the tires match the overall diameter and any wider than 7.5, increase the offset.