No the main 16-18-18-38 are the only thing you should worry about, others are tricky to setup, since two combing results the third one, sorry I cannot give you exact how and what since ME/I cannot understand it well, for now keep the main timings and a bit higher voltage by 0.1V or 0.2V wont kill it.
Also on CPU-Z SPD tab shows the voltage for XMP.