Want springs, but I have coil overs in the front?

As of now, my suspension is as follows:
-Eibach Launch kit with the airbag
-SouthSide Machine Lift bars
-Unkown Tubular UCAs (Poly bushing)
-Stock K-member and front control arms
-Lakewood 70/30s and 50/50s

I'm looking to get away from this mild drag setup and make the car more streetable (Plus I hate the car's stance with the Eibachs). I want it nice and low, but not too low I have LT's, and to have a smooth ride. I'm also adding coil overs in the front (Maximum Motorsports). Here is have I have planned:

-Maximum Motorsports tubular LCAs, with the spherical bushing on one end.
-Maximum Motorsports UCA spherical axle bushing (Keep the tubulars I have)
-Koni Shocks and struts (Which ones?) [I bought the coil overs for these model]
-Maximum Motorsports C/C plates (have them, not installed yet)
-EVENTUALLY Tubular K-member and front A-arms.


My question lies in the springs. Which ones (spring rate for the front) should I look into for what I want? Now, my other problem occurs: Since I will be running coil overs in the front, can I get just rear springs? Will the front have to be matched in some way to the rear (Spring rates for example, I'm assuming two very different rates/wheel rates will affect the ride). Does anyone have experience with this and figure what I should do? I already have a 14", 2.5" dia 200Lbs spring for the front, but those are too soft, no? I never even used them.