Shadeweavers is good up to about 10-12. You can do higher on the far side, but the mixed level of aggro mobs can make that hard, and I never tried it.
Hollowshade I wouldn't touch below 15, and would be ok up to about 30-35. The caves are tough solo even at 45, but the big problem is that Hollowshade gives almost zero experience for some very tough mobs.
LOIO could be good from 15-22 by the windmill, then at the fort/goblin tunnels to 30. For Warsliks, start at the fort from 22, but it will blue out before 30. The brutes outside Dalnir should be good from when giants turn light blue into low 30s. Then you could take a look in Dalnir, for most of the 30s.
Don't forget the Overthere for 15-22, then 30-45.
My preference in Kunark would be FoB to 9, Kurns to 18 or so, possibly LOIO to 22, then WW followed by Dalnir. I'd like to work CoM into the scheme later on, and avoid FM/OT/DL.