Yup, that's the one I have the paper copy of. You summed it up quite nicely and the info in the article is fairly correct. The only part that might not be 100% right is the part about the 3 packages per squadron. The word on the street at this point is that VMGR-352 will be the first squadron as the major player with it. 252 quite possibly could be taking part as well. I don't think 152 will be much of a player initially considering their AOR.
It's a pretty exciting time to be in the Herc community. I know that I always wanted to be part of an offensive platform. Like HD said there will be no perfect platform for every situation, and being able to accelerate and maneuver like a Harrier or Hornet would be nice in an ground-threat situation. However, the J mod in a light configuration (I am assuming an attack KC-130J config would be much lighter than with a fuselage tank full as well as being bagged out for AR ops) has a significant increase in performance over the legacy Hercs the AF operates in the AC config. The J mod is not your father's ... I mean, grandfather's Herc.