IMO you have to change:
-The boots
-The offhand and mainhand:
If you're going to stay with that main-hand just pick up a book for off-hand
for mainhand you could use:
-
Submariner Killer (For a classic Necromancer looks, dagger + skull or book, also yes these's a wand that looks like a dagger so don't worry
)
-
Wand of the Exiled Path (If you want to stay with the skull wand, in these case don't use a skull offhand)
For Off-hand you can go with:
Out-of-Date Manual (or anyother that have the same model)
Swampchill Fetish (or anyother with the same model)
Book of the Dead (or anyother with the same model)