Hey mate, welcome..
As all have said, there's plenty to spend your hard earned on...Personally I would go with the following in order (I would always get handling and braking first before power, but thats just me )..
Eibach or H&R Springs
Whiteline Rear Sway Bar and Rear toe plates
QFM HPX Brake pads (from GSLRALLYSPORT) with good fluid
Braided brake lines
Whiteline Front Strut brace
New Spark plugs (NGK Iridiums or Cosworth 071 from UK eBay)
Re-flash (from whomever )
Exhaust (Min 2.5")
Dump pipe
FMIC
New intake (Pod & heatshield, 1.9 or 2.2 airbox)
Powerflex engine mount kit
Shocks (Koni etc)
Whiteline Caster Front bushes &/or Powerflex Front Bushes
VXR turbo
Thats the starter list...Have fun and keep asking questions...Look at the Members ride sections for idea's and trawl UK and german eBay for parts and idea's.
Cheers mate