As everyone else has said, you're gearing is pretty solid; certainly more than capable of running Heroic content with a decent crew. Couple of things I would consider picking up though; the Titanium Earthguard Ring and the Titanium Earthguard Chain. Both will give you a nice boost to Str and Sta. There is, of course, the argument that the badge vendor necklace is a better option, and it is marginally better. However, the first badge item I imagine you get will be the 15 badge Libram of Obstruction, then another 25 badges to pick up the necklace. For the sake of, what, a thousand gold (ish) I bought the titanium neck and will be buying the belt, chest and gloves first.
Purely personal preference you understand. The main thing point is that you are, indeed, ready to start leading out dungeon crawls. Have fun with it, and I hope you'll be as keyed up and ever so slightly nervous as I was in my first forays to easier HC content :)
Also, regarding ease of content I would suggest Utgarde Keep, then The Nexus followed by Violet Hold. Only problem you may have in Nexus is if you have sub-par dips while dropping the stroppy dragon; I had the dubious pleasure of running Nex, Uk and VH in one evening, with the same party. I came in second on the recount meter. Bloody second. I'm the tank for goodness sake- i should be 4th. 3rd tops. But 2nd?
Sorry, rant over :) But seriously- bring half decent dips and you'll have a much more pleasant experience :)
Good luck with it all, and please report back on your experiences :)
Ttfn,
Jon