I have to admit, that rig is going to thunder.
I think a "rig of doom" is one that makes people go

, is generally overkill, and makes some sort of wall at least 4 feet tall, and when the cabs are stacked on their sides, must be at least 32" wide. A rig of doom also must consist of multiple cabs, and have at least four drivers (not including tweeters or small midrange drivers).
So, two 8x10s is a rig of doom. Two 2x15s is a rig of doom. Two 2x10+18s (Peavey 1820) make a rig of doom. Two 4x10s is
not a rig of doom. Two 4x12s are a rig of doom, whether they're square 4x12s, or staggered (aka GS412). 2x10s along with
any other single cab do
not make a rig of doom. In order for 2x10s to be part of a rig of doom, they must be accompanied by much larger cabs as well. Same goes for 1x12s. Nobody is going to go

at a 1x12. Just face it.
Wattage isn't that big of an issue. Technically, my rig is just a pair of 100 watt heads, but it's probably one of the louder rigs on here, due to cabinet efficiency. Remember, wattage does not always equal volume (a prime example is the Ampeg SVT-4Pro).
I think I summed it up well enough. Maybe this should go in the FAQ?