Hay guys, i am looking to add STi pink springs to my factory struts. Although i'm positive this question has shown a bezillion times, i am wondering what will the springs do in terms of factory strut integrity on a MY06. My second question is, the springs will be used a bit so am i looking to gain any substantial upgrade in rigidity and body role over my fairly new stock springs? I would like to add this with cobbs rear endlinks and sway bar. Also if any of you can shed some light on a sway bar package ups and downs because from all i have read when adding a front and rear swaybar in conjunction with one another you basically canceled out the modification.
Mod list for suspension.

STi pink springs (only)
Whiteline strut bar
cobb F/R strut stage one (I.e endlinks, bushings, bar)

The parts will be used on daily driver w/ new born and autoX/RallyX's, what do you guys think?