Before compiling, you need to make up your mind whether you want a Simple Map - meaning no BSP - or a BSP Map. You can't compile a "Simple BSP Map". When the BSP is not generated or not used, for instance when you have no Pro Edition, an ABT is generated by the engine.

The visibility setting or the Mesh setting have no influence on whether it's a BSP map or not. Meshes should always be enabled for A7, otherwise you'll get a slow, ugly A6 level.