All...can I ask an honest question?
Am I making this character more difficult than what it should be? Should I just go with the standard mage and not try for the Runesmith PrC? I read the Eberron book alot last night, and couldn't see anything that spoke of dwarves really being "soldiers" like I think of them, so I started to wonder if I would be better off just making him a simple Wizard.
Any thoughts?
Well, I always say that the character is fun, both for you and for the
group!.
I have though, on one occasion experienced alot of bad blood with a Spellsword (Complete Warrior) in a group. Here's why:
Wizards in full armor usually stand to gain much and loose little once they are able to ditch Arcane Spell Failure somehow.
1. Low Hit Points= High AC has the most return benefit to the arcane caster, because they have more to lose from being hit, than the meatier classes do.
2. Reduced mobility doesn't bother the arcane caster, because they usually fight from range.
3. Max. Dex. doesn't bother the arcane caster, because their ranged attacks do no rely on Dex.
4. ACP doesn't bother the arcane caster, because they are the most likely to move around with magic in a pinch (levitate, fly, dimension door, etc.. - Clerics with the travel domain also tend to ring my alarms here)
All in all, I'd make sure those Fighters, Cleric & Paladins are fine with you outperforming them in their niche of armor use before going for such a build.
As I said, I've seen some bad blood over this, and the Spellsword makes it alot harder to cast Fireball in plate armor than the Runesmith does.
But if thats fine with the rest, I'd say play a Runesmith for all it's worth. Your character is certainly a fine read and I think it'll be a few days at least before you can enter the game. (just assuming here)