If you were Thorin II Oakenshield, what would you have done differently after taking over Erebor?

I assume I, as Thorin, have complete knowledge of the book canon…

The “good” peoples of Middle Earth are all low IQ morons so I'd just pay them off and then give the call for all and any mercenaries to rally to my banners, possibly buy off a few Easterling bands since they seem to the only ones (apart from Orcs) actually having any babies (not getting into the entire Tolkienian Catholic BS about inherent evil here).

Also, the original battle plan by the Three Allied Armies was pretty solid. It wasn't until the goblins and wargs counter-flanked them that shit hit the fan. I'd advise my Elven and Human allies to keep one wing in reserve and pay off the Ravens to keep track of the movements over the Spurs, possibly build field fortifications around the river since Dwarves are such awesome engineers that they can fix a decrepit fortress within a week.

Should be an easy curbstomp for the Allies, even without the Eagles. And if Beorn arrives, all the better. Let's not forget that he was the one who broke the Goblins in the end.

Then I'll settle to playing Kingmaker for the East with my unending wealth. It's not possible to defeat Sauron militarily but might as well give old Denethor the real MVP a helping hand in the story.