I have an 18 inch Tempur-Pedic back home I keep it at my dad's house as I'm there frequently visiting. It's size and weight were very detrimental to moving it this is the third attempt at a bed in the Box. Yours is the winner.
I am not enjoying the mattress. In fact, I have slept on our couch more than the bed lately. I have neck problems, two surgeries, and we have tried with and without the topper- but I am not getting comfortable on the mattress.