Brake lines are one modification that changes the pedal feel a lot. Which HAWK pads are you going with? If you have the HP+ you might just be unable to brake smooth. My GF hated my HP+, I was braking so gently that only the inner pad was wearing out, and yes I clean and grease my brakes twice in the summer so... . I am planning to have HPS for most of the season and maybe a spare set of HP+ just in case I want to be more spirited.
I got a deal on rotors and hps pads so I'm going to use these until they go bad and then I'll replace them with racingbrake rotors and pads down the road. I'm really conservative and thoughtful of my brakes and mpg during my commutes but when I'm driving spiritedly I'm hard on them.