1.5 inch drop? I thought you were looking for a soft stockish ride? Your ride is goign to be really rough if you drop it that much. I had Bilstein sports with H&R sports and they were great. Nice agressive drop and a bit stiff.
Stay away from coilovers unless you spend the extra money for ones with adjustable dampeners. This means you can adjust how soft your ride is. Youll almost never adjust your ride height.
What i recomend at Koni adjustables with eibach pro kits or H&R sport springs.
Are you still lookign for a softish ride or is that out of the picture?
Also, dont worry about control arms, they arent somethign you really need to change right now unless you have to. Its just extra money. And youll eventually get to them.