I'm planning on running an incredibly similar list as you, and am pretty excited about it but I'm weeks/months away from actually being able to try it out. List in spoiler tag, and since our lists are so similar, I'll put basically my reasoning for this list below:
Some key notes. First I think in your list you could run "Warlord" instead of "Command Entourage" to benefit from both "Magnificent" and "Strategists". Next, you have three artefacts I think, and I'm not sure thats "legal". Assuming that's just a mistake/typo, I'm wondering what your plan is with Arcane Tome? Is it really for those extra casts? I've sorta thought about this but I think the utility from the other artefacts is a bit more reliable. For my list, I decided to give my first artefact to the Wight King on Steed, and went with the Oubliette Arcana. I have a feeling that since I'll likely be moving the Wight King around a lot, having him be able to potentially negate a nearby spell could be useful. Second Artefact is pretty simple, give soulbound garments to the VLoZD because I want to keep him around as long as possible for obvious reasons.
For spell lores, the best spells seem to be on the warscrolls, so I'm really just planning on casting those and am not thinking about the lore spells much. I haven't decided what to give Neferata and it probably won't matter much anyway, I'm going to use her warscroll spell and then probably just Mystic Shield or something anyway. Although it might be fun to give her a deathmage lore spell, in addition to Decrepify on my Necromancer. Since I'm definitely going to try the mini-bravery bomb with Black Knights + Wight King w/ Steed (and took Soul Crushing Contempt on him, as he's my general for obvious Grave Guard Battleline), maybe somebody in my list should have Spirit Gale for an opportunistic zap, but it seems pretty situational and its probably just better to take Amethystine Pinions.
For the Grave Guard battleline, I'm going with the 2H weapons because I want those guys to hit as hard as possible. My death rattle skellies are the tarpit. Obviously, Black Knights are mostly a battleline tax but I think they serve a few uses: the bravery bomb, ramming into things very early on in the game, and likely dying early so they make a good endless legions candidate.
Obviously Blood Knights seem to be the favored hammer here, but I'm interested in swapping them out for a few games with the Crimson Court instead. I'd like to try using the Crimson Court because Duvalle has a great spell (Fiendish Lure) that I think would be great for basically setting a target for the Grave Guard or Black Knights, he gets to take a spell lore (so could put something like Spirit Gale on him), and I think the court would make a great screen/protector unit for my Necromancer who I have a feeling is going to be hard to keep alive and easy pickings for my enemies! And they are only 5 more points than Blood Knights so its an easy swap.
Last, what I'm most bummed about is I can't fit the Horrorghast in, I just need 5 (or 10 with Crimson Court) less points to fit it in my list, so as of right now I'm just taking the gravetide instead. Heres to hoping Black Knights or something get a points reduction so I can fit it in!
Since you mentioned the Coven Throne, one other list I'm thinking about is just getting rid of the Wight King and Grave Guard, putting Aura of Dark Majesty and Soulbound Garments on the VLoZD and making him my general, running an all deathrattle skeleton battleline, and fitting in the Coven Throne. Can post that list if you're interested but its pretty different than the above!