Neat, I guess...
Options in the HQ department don't hurt. Though I question whether you'll even use the Archon (if it's the new one; don't use the boxed head! It's a potato-faced trap! Replace it with a Mirrorhelm (Wyches, Reavers and any vehicle kit tend to have them) or a leftover Kabalite/ Scourge Helmet if you want it to look respectable.)
Incubi are fun* to model, good luck with the trophy racks.
List looks pretty decent. What's the special Weapons roster at on the Kabs, Wyches and Wracks?
Have you discovered the glory of bitz boxes yet?
* Fun is to be measured in context of Dwarf Fortress.
This world exists because of the things we have done, forever branching to the decisions we make and twisting to what we do not.
”Woe to our enemies. We'll tear them apart regardless.” ~Barrywise