Hey Nick. That’s exactly what I did. Started out with the recommended starter size then upgraded to about 5′ square, which gives about a 4′ square cutting area. Somewhere in the build section I’ve got photos of my build. There are a few this size now, so far I’ve not heard of any issues, but you will need mid span supports, and I wouldn’t go much bigger. I’ve not cut anything this big yet though, about 30″ in diameter so far, but the extra space was needed.