Citadel has always been a must. In
IB, I wouldn't use Isildur at ALL, man, especially in Expanded (and I suppose you're using
The ring of rings). Probably
Boromir, BOC or some resilient Frodo (in that case, you just need some
I will go or def +1 stuff to protect him.), then you wouldn't have to pack so much healing (sixteen slots is A LOT).
In my version (which it's not very
IB actually, cuz it has a twist), I use
Frodo, courteous halfling or
Hope of free peoples with
Sting, Elven long knife (sometimes threats are WAY too much). Also, if you need to add more threats (AND help you with roaming), use
Ranger's Cloak. It helps a lot. Also,
Ranger's longbow is useful. I don't know why aren't you packing it.