How about:

Wizard 3/MS 2/Incantrix 10/Archmage 5

Or switch out Archmage for Abjurant Champion if you can get martial weapon proficiency.

Also, I wouldn't go human with so many allowed feats, as it diminishes the value of it. Instead, try finding a race with decent racials and at least one martial weapon proficiency, opening Abjurant Champion without burning an actual feat on it. My thought is an int-elf.