If you don't need the height adjustability stick with normal lowering springs like H&R's. The only way the camber will be normal is if it's a "stock height" camber won't be terribly off with a 1.75" drop. Tire wear won't really be an issue. If you have expensive tires I would suggest camber kits. Depending how many miles are on the car all you should need is new struts and possibly new upper mounts if there is a lot of miles. The install of struts and springs is simple IMO but it's what I do every day. You may be able to get away without a springs compressor since the struts your taking apart has a 3" drop and the new struts/springs will have lowering springs. The hardest part usually is removing the rear lower strut bolts, sometimes they are frozen in the bushings.