I concur with Luke, it is much easier to have three or four sell points already added to the map. Placeable sell points can be difficult to place unless you're familiar with GE. Also, is this a ...

This mod is a bale fork……..Where is the Magsi?

There are NO TEXTURES/SHADERS for these files.

Is it a 4X map?

This mod is not compatible with CoursePlay and will crash your "savegame".

Nice map, thanks. You forgot sorghum (milo) which is widely grown in the Central Plains.