Yep. Enjoy it! I expect you'll love it--in the winter, yes, but all-around the legacy is a fantastic car, even in the dry (especially in the canyons).
As to the synthetic concerns, I'm on my 7th Subaru, I used to work at a dealership, and then moved to corporate, I've run all 4 of my turbos on synthetic and never had any issues with any of them and SOA is (finally) supporting it officially.
Injectors do lose efficiency with age/deposits etc, it's just how it goes. Replacing them around 100k miles isn't uncommon.
Turbos last as long as they've been well-maintained--I've seen them go at 30k from abuse and oil starvation, and I saw an 04 FXT with 212k miles on an all-original engine/turbo (though it was mostly highway since the guy was a sales rep--and he ran synthetic oil fwiw).
Head Gaskets are less of a problem for most 2004+ Subarus, though the nature and placement of the engine does make them prone to failure with excessive mileage and age (especially if you don't regularly service your coolant system).
T-belts are "wear" items, and are designed to be replaced.
Also, check out
www.awdpirates.net (local AWD/Subaru forums) and
www.NASIOC.com (national Subaru forums) and
www.legacygt.com (national legacy forums)
Any of them have their share of assholes, but overall they can be very helpful to Subaru owners with questions of any/all kinds.
Anyway, I hope you love it!