JBM585 based controllers, has been used by many of the users.
But, I do spot a "minor" problem ...
The SATA controller is "B-Key", and the extension you link to, is "M-Key".
What "Key" do you have on your mainboad?
Edit: on closer look, the "minor" problem should not be a problem
btw: are you using the "Oculink", and if so was it easy to get going with XPE?