Howdy Niels,
I would say for any sort of perforated wood anything, CNC is for sure the way to go. For the other stuff, however, I don’t think Maslow would be the best solution. For any application that requires long, accurate straightaways, using other tools like a table saw (or router table in the case of the ceiling panels) would be much quicker and more accurate.
My thoughts are that the Maslow will really only help you a significant amount with the perforated panels. If you really want the panels and want to do it yourself, go for it!
Also, here is a thread from a user looking to adapt the Maslow sled for use as a router table, which you could use to make the ceiling panels.
Patrick