So Imp Spell Capcity is the epic feat, right?
Reach Spell might be good in this case, I'd think. Looks like we're banking on Empower Spell, too, from the 3rd level spell list.
We could! Though that raises a question -- is this an advanced form of the Fool? If so, should we call it that? If not, why don't we drop the Fighter level?

In that case, the question is whether a life-drinker is worth burning a feat. Probably not.
Let's go with Reach Spell, Empower Spell, Quicken Spell, maybe a Spell Focus or two, Heighten Spell (also in the spell list so far), ...
Yeah, let's stick with a staff or something. It shouldn't need to rely on melee weapons.
Good feat selection thus far...

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.