Dammit, I was working on almost this same build. Oh well. If I could make a suggestion, you might add Spellbreaker as the Mirror Shield. It might not look like the Mirror Shield very much, but it has a similar function. And as some others have said, I don't think that the shield bash perks are entirely necessary. Anyways, good work, it's probably better than mine would've been.
Dammit, I was working on almost this same build. Oh well. If I could make a suggestion, you might add Spellbreaker as the Mirror Shield. It might not look like the Mirror Shield very much, but it has a similar function. And as some others have said, I don't think that the shield bash perks are entirely necessary. Anyways, good work, it's probably better than mine would've been.