Character is a dark elf patriarch, currently level 64. I haven't made use of any other characters as of yet, I have aliied the Dragon hunters and the Minotaurs, Cleaned out the naga lair The dire wolves the cheese quest Found ebonest, and rescued storm lance. I am about to go hit the dark dwarves in Alvar and get an axe for the Minotaurs. Then probably go after Korbu. Any other suggestion from here?

Sounds like you are making good progress. What sort of suggestions are you looking for?

Which of those I've got left will be the easiest. I've already decided I probably need to be about level seventy before I can clear Korbu's crypt.

You want to know which quest(s) to tackle, among those you haven't completed?

Uhh...

I'd guess that allying with the Priests will be slightly easier; you can use invisibility to get past the Necromancers. On the flip side, if you want to fight, then the Priests are probably a little easier to kill. Either way, you'll have to have Dyson Leland along for the ride, though I don't know if he needs to be alive; he might need to be alive to complete the quest that allies you with the Priests, but you might be able to just drag his corpse for the Necromancer alliance.

I haven't done a solo run, so I don't know.

Have you dealt with the Cyclops lair? That should be do-able. Raiding one of the weaker dragon lairs not associated with Garrote Gorge might also be do-able (in Ironsand Desert, I think?).

Getting Whistlebane's sword, if that quest is still available, should be possible. Likewise, fetching the soul jars and the Book of Khel for the necromancers should be do-able.