I could do it, but I would probably revise Melkior a bit.
I'm also considering switching it up so Alkazar is the Main character and Melkior is his Cohort.
Melkiors main problem was that I realized he couldn't take the damage of the things in this game. He suffered oodles of damage and was at like 10hp three times already. So he needs a way to avoid that. I'm thinking persisting Delay Death would be his best bet (although cheesy), and wouldn't require much changing in his build. He could share it with Alkazar then.
@Stormcrow, if you want to grab powers from other classes, an Erudite with favored discipline would probably be better for you.