I did what a PP said - waited till my husband was out of town, then took sledge hammer to the wall. In truth, the sledge hammer work is minor. There is a lot of cutting out with a saw, pulling with your hands, hauling the debris out in trash cans, sweeping up the mess. There was nothing particularly skilled about the demo. I framed in the new space myself, and that was a skilled job, for sure, which I did only marginally skillfully. I'd say do it!
My job did cost a whole lot of money, though, because once I ripped open the wall I found nasty, dangerous wiring. Backed away carefully, called the electrician, he came and rewired half the house. Yikes.