I think I have to go with the fly speed.
Did we have some idea on the "plus X" for the touch attack?
Those feats and skills sount good to me.
Well, that describes the original text pretty well, so it works. But I think just a usual "animate dead" SLA would fit the 3.X design ethos of unified (rather than exceptional) mechanics better as well as being simpler. Still, as you like. It's not "official," so I won't fight on this.
Solitary works for the org.
CR 5 like the wraith or maybe CR 6?