I'm looking at doing this mini myself currently and love your color scheme. Some things I am going to attempt to do differently, that I think would have been an improvement on what you've done.
A) The gems in the staff and sword. I'd give them some NMM shine.
B) The base. The silver look seems off. Matte Black would look better IMO.
No need for the "pro's"--It looks like you have done a mighty fine job here yourself...The robes look great, are they purplish? Skin tones and the reds are awesome too. Very nice indeed. I would say an 8.5