Go with a smaller lighter winch, snatch blocks and synthetic line. And I mean lighter than the 12000.
Unless you're planning on hauling your rig up a cliff or really like to make sure you're as stuck as possible before using the winch, I think you'll find that the snatch blocks will provide enough mechanical advantage that you're going to be able to do a pull with a smaller winch just fine.
I just discussed this with a rancher friend who is visiting. His response: "Just how bad do you have to be stuck to need a winch that big? Do you have to be buried up to the axles in a ravine to need that? Number one is not to get into something where you need a winch that big."
This is not a popular philosophy, but advice is free for a reason.
Or at least my advice is free for a reason.
FWIW, I don't have a winch yet, but I've pre-rigged my van for use of a Warn portable with receiver hitches front and rear along with pre-wired connectors for power at both end. When I get around to a winch, a portable will be enough. Plus I'll never have to do one of those fancy setups where you can use a front-mounted winch to pull you backwards.