Janice, I'm not a Night Owl, but have an interest in your question. Are you thinking you need or want to cover the entire surface with cutting mats? I'm not sure it's necessary. I have one of those white craft tables that have fold-down sides (which I never fold down). Guessing the top surface is about 60x42, based on the fact that I use the biggest Olfa mat like yours (I'm too tired to go upstairs and measure). Since I never cut more than a yard at a time, and usually much less, I have never needed more mat space. I like having the plain, uncovered space for stuff like a lamp, scrap keepers, note pads, pattern for reference, a place to set my blade, etc.