I think this is probably the best XI given the conditions. It is difficult to leave out Starc though. I like the two all-rounders because I feel the competing batsmen are only of similar ability.
By competing batsmen, do you mean Voges, Watson and Mitch Marsh? I can't see in what world 2 all-rounders are necessary. Voges isn't an all-rounder, he's a handy part-timer like North was.