[Humakty]

I think that, in SP, you could relly heavily on Death enchantments, like,(an example I've chosen randomly)the marvelous undead elephants(3 to 4 in each main army), who will crush the AI hordes. I also think you should not take sloth, cause basic undeads rarely win battles alone.(1 or 2 prod could help for a beginner, (I often take prod)). The rest as been developped before in this forum.
Ah ! I don't think vestals kick that much, 'cause, if I remember well, they're capital only.( not sure of this one)
Anyway, a zero prot sacred needs lots of buffs before becoming usefull.