Wow! You've been very busy before dinging 70. You'd be good to tank any heroic and the first half of Kara at least. You're better geared now than I was part way through Kara. You're uncrittable by a lot, so you can afford to drop your Regal Protectorate for a stamina Darkmoon card or the [item]Argussian Compass[/item] from the last boss of heroic Underbog (much easier to get).
Karazhan/heroic badges will probably have the first upgrades for you in some slots. I'd have to say you're the best geared fresh 70 I've seen yet, because there are a lot of tanks out there with worse gear than you who have been 70 for months. Very impressive.