You should mention in races that Dwarves get access to Runesmith and, of course, mention Runesmith in PrC chapter.
Runesmith is good (not "Incantatrix" good, but still very solid choice). First, it make your spell auto-still, on first level, which is really good, but it gets even better. On 3rd level it allows you to prepare runes (Con mod per day) instead of spells - spell level increases by two (note that this is not metamagic), but it allows other cast this spell as effective as you, without UMD or anything. Just imaging applications for that. Party rogue needs an invisibility spell? Give him a rune so he could cast it when he want's and don't bother you. Give all team members rune of dimension door for quick escape or just completely ruin all this magic shop in town, 'cause you don't need gold or XP to create this mega-scrolls (better then them in any possible way). And on 5 level you get an ability to inscribe some spell on your body. Once and permanent decision, so use it wisely - sacrifice slot of one level higher and get this spell as a spell-like ability twice per day (limited wish is a very good choice i think). You pay full price but only once (though, clarify that moment with GM). And on the top of this, runesmiths have d6 HD and high Fort and Will saves to ensure you survivability.
There is only one downside to all of this goodies - somehow you need to get proficiency with heavy armor (more reasons to dip into cleric, i think, or even fighter), so you lose 1 caster level (or 3 feats, which is much worse).
With all this, Dwarves makes very powerful wizards (and with better chances of survival on low levels)