Wouldn't it be more sensible to put the two specials at the end of Series 1 (by which I mean the first six episodes)?
Given the likelihood that Chris Langham's Hugh Abbot will not return for the third series, it seems sensible that Ianucci and co. will wrap his character up in the first episode so as to not have to continually assure us of his off-screen presence, as they did with numerous phone calls and references in the two specials.
The presence of those references then surely attaches the specials more firmly to the "Hugh Abbot series" than it does the new one.