The machine should have come with a few white ink profiles pre installed, we have a few for 3m IJ180.
No profile needed, just need to select the "white or metallic" for special ink set in print mode. Then if you are running white inline, choose any that says white, if you want a white over print or under print, choose white(2layer). If you are anywhere but NA, you can choose the 3 layer mode, but NA doesn't get it for some dumb reason.
We've considered getting into profiling, but haven't gone that route yet. We're running Onyx Thrive.I made my own profile using my iOne profiling tool. It might cost 2000$, but it's worth it to have the best profiles possible. What rip are you using? I use ColorGate.