Given needing two characters, it sounds like one of them is the eight set dungeon conquest. I almost always play Necromancer, and it has four fairly easy set dungeons. I think I'll usually do Crusader as well since they're fairly easy.
Hm, I've only ever done the gold streak once, and it's not too bad... but it does require a good set of gear that normally gets trashed. 😛 It also requires you to death run through the area opening the doors so they don't slow you down while making the actual run.
Or craft up a bovine bardiche, and cube it to get the "Not A Cow Level". That is so dense with monsters, you just got to the nearest wall, and start going around the outside, and with a fully leveled Boon of the Hoarder you get the gold done in a few minutes.