Which post-processor to use?

I have a project to do with wood and CNC machining. I've reached out to a local workshop and they've agreed to let me use their machine for my project. The only problem is that I don't know which post-processor to use for my solidworks CAM Gcode. It's a smxcnc mustang 5x10, works in metric (mm). I've reached out to the company asking for a post-processor since the shop doesn't use solidworks CAM, but they told me to ask solidworks directly. What post-processor can I use? Any help is appreciated. Thank you. 

 

Edu SOLIDWORKS CAM