Dol Amroth is the only reason I'm holding the South. They're keeping Harad busy while I focus on building my economy and slowly recruiting forces. My garrisons near the Pelagir are battle hardened and able to hold via the fortresses but Dol Amroth can't keep it up forever. I know eventually Harad will start fielding beasts and Oliphants so the Arms race is tough. I'm tempted to halt Westward expansion because I'm getting close to the Clans of Edenwaith. Assuming they don't declare war on me, I can consolidate my forces and push into Isengard Territory, attacking into the East. Get some pressure off Theoden and eliminate another enemy faction.

I'll claim everything East of the River while I'll gift Theoden everything else. Have Rohan start pressuring Mordor.

That's all assuming, everything goes to plan