1.6 inches is a RIDICULOUS drop. stay beween 1-1.25 inches and it will still look very agressive.
What you could do is get a different brand of springs. Those UUC's would blow out your current suspension. So you dont have money quite yet to get the shocks. Well if you have your heart set on springs right away get a mroe conservative spring like H&R sports or Eibach Pro Kit. Then install them and align them> It can get expnsive to upgrade suspension. After this youll probabl blow your shocks rather quickly dependign on their current status. Then you will need new shocks. You need to go aftermakrte otherwise youll blow out a new pair of stock ones. So get aftermarket, which will be stupidly expensive. Then install again which is expensive and align.
Ultimately installaiton is what kills you and should have you motivated to do them at the same time. Plus, sport springs with stock struts isnt very safe.