I have a 2019 Cayenne in the same color you chose! I get compliments all the time.
I don’t think you need the dash compass as you can put a compass in the right-most position of the instrument cluster.
Also, consider larger wheels as you will get painted trim around the wheel wells instead of cheap black plastic. I am still kicking myself over this! Otherwise, your is a great build.
I got 7% off MSRP in NJ, just for reference.
I also have a 2018 base Macan, and my baby, a 2014 Boxster S in dark blue metallic.