Agreed! That looks great! Using some kaowool, will help the weight for sure. I didn't in mine, opting for 2" of castable instead. I'm not exactly sure how much it weighs, but it took 2 of us to get it on the stand. If I were to re-do it, I'd do what you did, using 1" of kaowool under the refractory.That is looking AWESOME!! . . .but I had to use an engine hoist to get mine in place.