Small build which is good for your purpose. No doubt that thing will push through cf and aluminum. I know you’re already planning a mister for cf but aluminum should benefit a lot from it too. Don’t know about what to mist on alu but I pretty much have the same goals from the MPCNC as you do and I can say that vacuuming aluminum chips gets old fast. Blasting them out should help cutter life, and it earns you some style points.