If you are just going for loot I don't see the point in equipping archers/barbs.
I have been using 162 goblins and 8 wall breakers for a few weeks and its basically unstoppable as long as you attack correctly. I will only grab 1 star typically (or even 0) but I grab every last coin possible.
Keeps the towers and cannons at bay. Gives my goblin horde some cover. Works for me. I've tried the 100 goblin raid and they just get eaten up. Straight cannon and mortar fodder. Both are effective in their own way.