Heh, all of the books are available now, online.
Of course, if one has legit legal reasons to not do that (like me)
... don't worry, that'll change within the next few years.
I can wait.
{ ... insert patience versus spanking smiley face ... }
Pretty much, the Divine Mind would have a couple advantages unless you swapped commoner to Warrior. Like BAB, and I think higher base saves. The Ardent levels would need to be after 2 commoner levels for maximum effect, and with the right optimization could still get 7th level powers.
Well, I picked Ardent 8 because 10 gets too much, and 9 gets the 7th level powers easily.
2 4s and 2 5s and
2 6s is better "on time" and earlier than Divine Mind.
I mean yeah, if that build tried to do
exactly what a Divine Mind does,
it'd be a little weaker early on - but not by much. Costs only 1 feat too.
Get rid of the "exactly" straight jacket and ...
... that's a lot of Commoner levels.