Tom, there are lots of options for suitable machines if your focus is primarily aluminum. The Practical Machinist forum is a great resource to learn more. Adding a 4th axis and building fixtures to hold more parts and even pairing with a small robot can really crank up production . . .

Designing high production manufacturing cells is what I do for my day job and glad to see someone in the inliner group making good use of a bit of automation here instead of sending the work to China.