Hey awesome to see your car up here! Finally got mine back, just need to take some photos now
I'm planning to lower my car 30mm on tein s.tech springs. Because mine is older I'll probably have to replace the shocks as well but not sure about yours. They sound like they have a good review from people on here. Bendigo Tyre Centre have them but I haven't been in to talk to them about prices yet.
http://bendigotyres.com.au/index.php?pr=Springs