Aloha G,
Since you already own the machine, one approach would be
to run Windows on your Mac and use the PC version of Cubase
in that environment.
3 directions/choices:
1-Bootcamp
2-VMware Fusion
3-Parallels
Any of these will allow you to run Windows on your Mac.
or
4-Sell your Mac and get a PC.
HTH (hope this helps)
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