Good time to play with a 'performance alignment,' there's plenty of settings running around the net. I'm running 0 toe, 2 degrees front, 1 rear, but optimal will depend on what you are looking for.

Your toe shouldnt change from doing your work, camber will.

 

Uh oh.

Coilovers are a shock/spring unit. You don't need separate shocks.

That is of course unless you're looking at ground control or ebay coilover sleeves. Stay away from the ebay jobbies, and think real hard before swappin for ground control stuff.

Swaybars are a tuning tool. Don't swap them at the same time as something else.

The STi has pretty good suspension for road/track stock, imo. I'd think pretty hard about swapping to coils; will you corner weight? If you're not going to, the coilovers don't have much advantage over a good strut/spring combo. Swapping to adjustable struts loses the 40mm piston in the sti strut.

Any suspension change is a compromise, i wouldn't slap some part on because some kid on the net said 'it makes the car handle better'

Experiment with the alignment, tire pressures, and dccd first; they're free