My death knight finally finished the "Where Kings Walk" quest. Now what?

Hello! So, I was able to finish the quest after waiting for HOURS since Stormwind got raided and the king got killed lol. After going back to Ebon Hold, I decided to go down to the chapel since there were tons of quests there, which the majority turned out to be dungeon quests. While there were some quests that were doable solo, I still found myself getting confused on what I should be doing. It would be a great help if someone gave me their suggestions regarding where to go or even a questline for everything that I should do after that point. Currently I'm level 64 and aiming to get to 80 asap. Thanks everyone!

Go to Outland. Fly to Nagrand and find Nesingwary camp there.

May I ask why is going to Nagrand the best thing to?

Edit: Nesingwary Camp is in Northrend though. I am so confused

Because Nagrand is lvl 64-67, you can even hit 68 in it if you do all quests and spam dungeons. That's on x1 Lordaeron, so if you're on Icecrown you'll be done even faster with it. My bad, meant Nesingwary Safari, not Camp.
Here's the link marked where it is: https://www.google.com/search?q=Nesi...X5EjyqQQqgtzQM

Thorbjorn is right,
There is a Nesingwary safari (camp) in Nagrand and i believe you can go there at level 64

Nagrand quests in general are pleasant, short and relatively close by.
Also Ring of Blood for some sweet exp and weapon (xmog) rewards.