Wrahn:
-you can't have a shield and the monk AC bonus at the same time.
-your attack rating is pretty poor...
-just so we're clear, here's the ruling on multiple metamagic: it all follows the precedent of Empower + Maximize. Namely, multiple metamagics do not affect each other. A Twinned Maximized Fireball gets you a 10*6 fireball and a 10d6 fireball. Metamagics that alter duration (Extend, Persistent) or range/area (Enlarge, Widen) are exceptions.
-Swap out Empower. Use a rod. This gets you an extra feat to play around with... if you use it to get, say, Arcane Disciple (War), you can have Persistent Divine Power. Or maybe Split Ray. Or, if you get Cleric too, Divine Metamagic (Quicken). Great synergy with Improved Metamagic, that.
-Do you really need that second Multispell? I'd go for Permanent Emanation, Extra Magic Item Space (Amulet), or maybe Spell Stowaway (Time Stop).
-You only need Wizard 5 to qualify for Loremaster. The other two levels are kind of a waste... I'm sure you could squeeze in a second base class or some low-req PrC.