Providing it's a pre August 2004 build & in luxury pack form Red Book states the following:
* Private Price Guide $26,100 - $28,800
* Trade In Price Guide $21,600 - $24,300
* Average Km 60,000 - 100,000
So to me, looks like your on the money in terms of what your buying - Just remember Red Book is only a guide
I wouldn't worry about higher Km's, it will come down to how it's been driven & how well it's been looked after. I've got a mate the has a MY00 Forester GT which runs the EJ20T & its done over 200,000kms. Heaps of mods, trashed everyday & he's never had an issue. So I guess that gives you a bit of an indicator as to how good the EJ20T can be
In terms of performance / power, Hot 4's project car is an MY04 GT. From what I saw last time they had done a TMIC, CAI & a tune (All AVO parts) & I believe it was running 150kw ATW.