Looking for a Campaign Book to Run

[Valkyrie-Storm]

Hello there Everyone.

So, I need a hand I am running a Campaign soon for a 6-Player group and there is a region that has always interested me in all of Pathfinder and that is the Land of the Linnorm Kings, I was wondering if anyone would happen to know of a Campaign book in which takes place in these lands (Can be 3rd party or Paizo made)

[WormysQueue]

Look here

[Killer Pixie]

...and here.

[Valkyrie-Storm]

Oh my God, Jade Regent goes there, I was thinking of Running Jade Regent, Is it easy for a Still kind of Learning GM (I'm not Brand New to Gm I have ran 2 Campaigns already)