There are a lot of variables in play when it comes to choosing the right springs, shocks and struts. You've mentioned looks, handling, and ride quality in your posts. Trying to balance all of those elements will require sacrifices. Here are some basic guidelines:
1. When using a stock-style (NOT coil-over)
suspension, these cars handle better when they sit higher than most people think looks cool. Going too low will make the car handle worse. I use Ford Racing C-Springs on my 1992 GT autocross car, with Steeda spring spacers up front. Going lower than 1" (especially without a spring spacer up front) will hurt the handling at the limit of traction.
2. Installing stiff aftermarket shocks and struts will make the car handle worse. Most aftermarket "performance" struts are stiffer than stock. Stiff shocks and struts, along with lower and stiffer springs, will bring the limit of traction further IN (you want the limit further OUT). Essentially, they add understeer and oversteer. I use adjustable shocks and struts on my 1992 GT, and they are set at "2" out of "5" (not very stiff). If I set the shocks and struts at "5", the car would be undriveable at the limit of traction (and that limit would be much further in).
3. Linear rate springs are better for performance driving, progressive rate springs are better on the street. Progressive springs soak up small bumps better.
4. Most people do not drive at the limit of traction (and they shouldn't on the street). It's very common for people to make their cars too low and too stiff, and not realize they've actually hurt the handling until they push the car hard (or have to make a quick evasive maneuver). How you intend to use the car is really important.
5. Your
suspension mods all work together. And they all impact understeer and oversteer. Having some measure of adjustability, even for a street car, makes a big difference.
If your car is going to be a street car, I think the Ford Racing B-Springs are a good option. I would get a set of Steeda spring spacers, and poly spring isolators. I would recommend adjustable shocks and struts (Koni Yellow SA), and I'd install a larger rear sway bar to help counter the understeer from your staggered wheel and tire setup.
You also might find this video helpful:
View: https://www.youtube.com/watch?v=9HiS-t4_O_w&t