Find a replacement VF22 otherwise nearly half of your budget will be spent on a retune.
You don't need 1000cc injectors either, so save that cash. 550's will be plenty and factory rails flow more than enough too, maybe just parallel them for saftey if you're messing about with them. (plenty can be found on that with a search of this forum)
Im presuming its a GC you've got if a GD intercooler is an upgrade?
TD06-25G is poo poo for a street car really, even laggier than a VF22. Even worse again if you slap a front mount on it also. VF34\35 or TD05-16\20G are the most common street turbo people go for and can be found quite common.
Heard plenty of good things about the VF48 too, much newer than the archaic VF22
http://www.perth-wrx.com/vb/sale/67852-vf-48-turbo.html plus a tune and you'll under budget with a much nicer to drive car.