Warn = good
I'm very happy with my 9.5ti. I've seen some folks do crazy things to Warn winches in the past (amazing what seems like a good idea when you didn't pay for any of the hardware), and they just seem to keep going.
12,000 pound winch is probably overkill on your rig (or mine). If you had a FSJ, maybe. When you're thinking about winch rating vs. vehicle weights, consider these rule-of-thumb number that the US army uses:
-Stuck to the top of the tires means you need a pull force equal to the vehicle's weight
-Stuck to the hubs means you need a pull force equal to twice the vehicle's weight
-Stuck to the bottom of the body means you need a pull force equal to three times the vehicle's weight
After you add yourself, a full tank of fuel, a buddy to help with your winch cable, and a cooler of Bacon to bribe Dom with so that he'll pull you out...5000 pounds.
Then again, you carry a snatch block, right? That will allow you to double your winch's 9500 pound pull.