That 342 is to be hit capped against raid bosses. If you're raiding that's fine, but against heroic bosses it's not as high.

I'm blocked here at work so I can't go digging like I would at home.

1- Rawr - you can filter so the list of item upgrades is limited to content you can clear or even by badge type. http://www.codeplex.com/Rawr for the most recent version.

2- Get Zap, it's Zamir's elemental spreadsheet, he created it after Binkenstein quit updating his.

3- Wowhead custom item filters are likely your best bet.

Were I at home I'd be listing specific items, but I can't get to your armory (neither can rawr) from here, wowhead, wowwiki, or elitistjerks.