[douglas]

300 xp isn't much at this level, and Limited Wish is one of your options for new spells for the level up. Assuming your feats are listed in the order you took them on your character sheet, separated by normal and wizard bonus feats, you could go back far enough on the minimum xp cost to switch out Improved Counterspell, which you haven't used at all yet, for Spell Penetration. Another 150 xp, and you could also swap out Improved Initiative, making Greater Spell Penetration achievable or taking the second Spell Focus feat required for Archmage. A total of 600 xp would be enough to swap out Iron Will, Improved Initiative, and Improved Counterspell for Spell Focus, Spell Penetration, Greater Spell Penetration, and retroactively move some skill points into Knowledge (Arcana) at the same time, giving you +4 on checks to penetrate SR and allowing you to take Archmage at level 15, instead of waiting another level to get the final feat and Knowledge (Arcana) skill ranks.

Hmm, while we're on this topic, I've never understood why things like Spell Focus and Spell Penetration aren't options for the Wizard bonus feats. They are directly related to improving spellcasting ability, so it seems to me that the same logic that puts metamagic on the list should also add them to the list.