[Chadfrom308]

If you are looking for a better CAM system, HSM works or Fusion 360 are both great and are free for students. And you can import solidworks and inventor files (because fusion 360 is basically inventor)

Stiffen it up, aluminum is not like wood. Luckily, aluminum loves high RPMs.

Ball screws or even lead screws should improve accuracy.

Honestly, just try cutting aluminum and see what happens. You will know what you need to replace