Good questions - just updated
the map; hopefully this helps?
Basically, everyone but Elizar and Jak are still in the tower, with a doorway to the outside, 30' above the ground, facing west. The outside tower wall is relatively climbable, and there's the top of the remaining scaffolding about 5' to the left of the doorway (you could make it to that by potentially jumping or climbing horizontally along the wall, clinging to hand/footholds).
Elizar and Jak are mounted on Sharpwind flying a little ways out and above the doorway, and they are visible from the doorway.