This is the quickest way to earn gold, items and XP that I know:
Start Act III, 7 and run through skipping everyone you can except elites.
Then kill Azmodan.
Teleport back to the stronghold after getting your rewards and talk to the guard.
Go to the armory, then the watchtower and run through the portal.
Go to Tyrael, run through the portal, then kill Iskatu.
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