My take on it:

It is a 2-year-old bike. Take that into account, external bearing cranksets are a lot more common and reliable than the ISIS stuff on the SASS. But BB7's are about as good as it gets for budget disc brakes. I wouldn't go for it unless you're getting a sick, sick deal.

Weirwolfs are the ****, I have those tires in 2.5's and I love 'em.

How big are you? If you're over 6', you might want to consider a 29'er SS instead. A rigid 29'er is a lot easier to ride than a rigid 26'er, and everybody and their brother is coming out with steel SS 29'ers now.