Uhmm ... yes, quite close I guess! I should pop in at some point to see your CNC machines!!

I have seen you have in mind to work with Fusion 360. It's a great piece of software (you would expect nothing less from Autodesk!). Compared to, say, SketchUp, it requires a little bit more planning when drawing. You can draw parametrically, defining variables to define specific parts of your drawing; this allows you, for example, to resize the drawing properly, not just scaling the entire thing. The CAM module is quite sophisticated (not that I have a huge experience about CAM software, anyway, but it seems to me quite detailed compared to some other programs I have seen). There are plenty of tutorials and video resources about it, and that is one other reason I chose it (apart from the price tag!).