Here's some advice for suspension:
1) 24mm front, 22mm rear
2) skip the strut tower bar (unless you're getting the rear one for a hatchback wrx)
3) bilstein struts w/ RCE yellow springs are real nice. You'll want to purchase Whiteline's center roll kit as well as lowering your car will f**k up your suspension geometry.
In terms of your power-related mods:
1) skip the intake and use the money for a downpipe
2) Cobb tunes are alright, but generic. Maybe you'd be interested in getting an e-tune that would be made specifically for your car?