I wouldn't take the Allgurin/Peterson combo as an easy opponent. Their single results are so-so, but they're both Swedish and having ~ the same age, so I guess they know each other very well.
I see Anett and Indy as the favourites, though.
I had heard from somewhere though that Ellen had been isolated by the Swedish Tennis Association as she and her family had refused coaching from them
Anyway, if Anett/Indy can get past them then a QF is almost inevitable