I am playing a MOS Gondor Campaign on vh/vh right now

Just uploaded a save and a screenshot here:
http://www.twcenter.net/forums/showt...1#post12801587
Feel free to do the same
I think I have been doing ok, until now (turn 39) I have not been hard pressed, but right now 4 quite challenging stacks are approaching. That will be interesting, since the most dangerous stack are threatening Minas Tirith, E. Osgiliath and Cair Andros, and Cair Andros is impossible to reinforce during a siege without attacking, as far as I know, and I have never defended E.Osgiliath or Minas Tirith before. I will probably put the main host in Minas Tirith, and if he besieges Cair Andros or E.Osgiliath, I will attack him from behind. E.Osgiliath or W.Osgiliath I would really not like to defend in a siege, since there are no walls to defend behind, and no space to use my cavalry I guess that would be terrible for my armies. I am not using militia at all, only archers and cavalry, and some spears and swords were I have them.
I am wondering if turning off garrison script would make it harder, since Rohan would probably have a harder time defending its territory. For now they have done well, but that is probably because of the garrison script.
The worst mistake I have done so far was a misclick that moved my capital to Henneth Annun, I moved it back the next turn, but it cost me 10.000.