100+ page book?
[censored] what class did you take
Eh, over time, it's not as much as it sounds. I mean, don't get me wrong, 100 pages is daunting at first, but I once started a Morrowind character journal that averaged 5 pages per entry, so I had over 100 pages after about a month and a half.
OP, I'd recommend drafting a few original adventure ideas first, and if none of them strike your fancy, then go with Mannimarco. Search for necromancy discussions in TES General regarding the ethics and mindsets of necromancers (there have been several of them, and they've went pretty in-depth) and definitely hit up the Imperial Library and the Fiction subforum.
EDIT: http://www.gamesas.com/index.php?/topic/1060340-necromancy-may-be-legal-in-cyrodiil and http://www.gamesas.com/index.php?showtopic=1053562 are the threads I was thinking of. Sadly, the third one I was thinking of (and the best one) was too old and got culled.
As for names, if you have either Morrowind or Oblivion on PC, then get the Construction Sets for them. Using the CSes, you can look at giant consolidated lists of NPC names, filtered by race. You can then mix and match parts of names or get a general feel for racial naming styles to come up with your own character names. If you don't have PC games or don't want to download the CSes, then look up NPC lists on UESP.
Regarding story ideas, dunno about specifics, but two concepts I've played around with myself are 1) Setting a story around a participant in the War of the Red Diamond, or 2) Setting a story around the abandoned companion of the Nerevarine after the events of Morrowind.