Got my own spreadsheet (internal FC sorry) for comparing three situation (Det / Crit VS SS only max VS SS / Det) on a fight duration with a bit of empirical testing as far as Det is concerned.
It depends a lot of the duration of the fight and my conclusions are :

On a short fight : Det > SS >= Crit
On a long fight : Det > Crit >= SS

So stack gear with Det and then find a balance between SS and Crit. Obvisouly, go to 480 acc in all of that.