Hi mate welcome to S.O.C
little bit of bed time reading here
http://uk.subaruownersclub.com/forums/topic/1619-help-check-guide-buying-1st-subaru/
And as for the clutch most people will upgraded them to stage 1 from the oem clutch with the AWD and the power, if you do a bit of launching, track days, what most of us here call spirited driving from time to time ;) I'm sure you know what I mean :) the OEM clutch is not good for all that and you can soon burn them out. And there not cheap to keep replacing so a good thing to have upgraded more so if you want more power upgrades to go with it that will kill the OEM clutch a lot quicker too. So yes good to know when buying one and if the flywheels been done to that is massive + for anything you want to upgrade.
And I can't remember whats been posted in the sales section now and whats been sold but worth taking a look here
http://uk.subaruownersclub.com/forums/forum/17-subarus-for-sale/
And hope to see some pictures when you find the one :)