Ok so I hit 50 3 days ago and I've geared up fairly quick. I'm now sitting at 716/554/106 completly unbuffed

I parse right around 625 dps on Boss target dummy as 51 archon, 675-700 as SC/Ele and I wanted to work on getting down a Necrolock rotation for fights when I felt I could do it.
My spec is 32/32/2 Nec/Lock/Ele (which might be one of the problems, I dunno)
Rotation I used was Nec-LL-DT-LD-VB spam then following this priority system

Soul Purge
Nec
DT
LD
VB

I was parsing 375 dps according to my friend... what am I doing wrong?