The Shapeoko HDZ has 150mm of travel. As I recall, the factory Z has half the HDZ's travel, but you should verify that with Carbide 3D. Also note that bit insertion points affect the true Z travel, along with how far in the mounting bracket you mount the router (aka spindle). BTW there's an XXL for sale in the Shapeoko forum (but it's near D.C.). If you go the Shapeoko route, don't forget a dust boot and some sort of a vac; CNC machines are messy.