So now that I beat the story, I need to gear up right? I should grind for Ala Mhigan gear which is ilevel 310 I believe. Weapons, accessories, everything? Do I need to augment it as well? And after that I move on to Lost Allagan gear which looks expensive as all hell and will take weeks to get wtf. So again, weapons, accessories, everything right? And then augment them. Finally, with all of that Augmented Allagan gear, I move on to Savage content. Is this all correct?
As well as what others said: you also have dungeon gear which is i300 in the mix as well. It should help you get high enough for omega. I would make clearing Omega4 a priority since that's how you can get a strong weapon but you need a weekly token for it.