Dungeoneering;Go for 99 DG, you should have enough tokens to buy 3-4 Chaotic weaponry then *
If my maths is right. You can then use these to train invention, by disassembling them at level 10. A cheap and effective way as opposed to Crystal weaponry and such.
Agility; Hefin agility course on VoS, nuff said
Invention;AFK Muspahs with a Spring Cleaner or go to any GWD boss apart from Zilyana. I think Kree'arra will be your best chance of making money as all Arma items are currently 2M+