Becoming an undead of any kind is not an option in this campaign. Nice suggestion though.
I just managed to get a look in a copy of Towers of High Sorcery, and it said pretty clearly that if I was a specialist already (which I am), I had to enhance that specialization. However, if I was NOT a specialist, I would become a specialist upon entering the class, though I had to choose a school in which to specialize that was supported by my order (the White Robes, in this case). And then it struck me; I can take the Elven Wizard substitution levels from Races of the Wild at level 1 and 3 to benefit as much as possible from not being a specialist, and then proceed to Specialize in divination and reap the best benefits of both worlds once I reach the first level of WoHS.. I hope. ToHS says that once I get a level in Wizard of High Sorcery, I can choose to specialize in a school supported by my chosen order (abjuration or divination), and from that point on 'follow all of the rules regarding specialist wizards in Players Handbook'. Does that mean that I can still choose the alternate class feature Prescience as a specialist diviner, once I become a specialist diviner at level 6? I am going to need some oppinions on this.