Fun to watch your team advance

[Hachoo]

hit 30k hp unbuffed

No point, You dont need it, Your other stats are really low, and You should work on them first, dodge/hit and expertise, I can have way over 30k stam on my dk, yet I choose not too, I can 100% guarantee You that a tank with 22k hp and 25% dodge/23-5% parry will be a lot easier to heal than a tank with 10k more hp but 10% less dodge and parry(this is just an example).
This reminds me of those people that always ask what is my spell damage.....empty stat unless You consider all the other stats that are involved in Your dps, and tank has more stats to worry about than any healer or dps(stam/dodge/parry/defense/expertise/hit/armor etc). Just like main tank in my guild told me, there is nothing in this game that requires more hp, other then maybe sarth with 3 drakes and we use druid tank there, she has almost all best in slot, and 27k hp unbuffed, my guild cleared everything including glory of the raider achievement.
Now on top of that You're running a team with no healer, so less healing on a tank = lots more dps on the boss.
Just few more pointers :P
Might want to use all 3 jc gems in Your gear, and as i pointed above 41 stam is not always the best choice. 15 expertise to bracers is much better then 6 stam, unless you're expertise capped.
Your meta is considered to be one of the worst around, it will make You take about 30-70 less damage per hit, stam+2% less spell damage taken one is much better.
Last thing is Your spec, fix it, 1/5 rage of rivendare? That's an amazing talents...desecration increases Your dps only by 3%, RoR will give You more, no Bcb? I would just copy my spec, its sort of a cookie cutter spec for unholy Dks, I managed to pull off over 10k tps on 10 man patchwerk with it.
http://www.wowarmory.com/character-t...das&n=Crisethe
And grats on making some nice progress!

and on that note...i kinda stopped boxing, no new challenges, grinding got a bit boring, no point in making gold, each of my toons have over 20k...my priest/mage combo got boring too..=(

My spec has been broken for awhile. I refuse to respec until 3.0.8 comes out. I need to respec all of my shamans as well. I've had this same spec since I left the DK starting area. Just don't want to rework it until 3.0.8 comes out and everything is final, as I'd hate to respec and then have to respec again a few days later.

I haven't used JC gems yet - I refuse to waste a 300g dragon's eye on a blue piece of gear. Also, I'm waiting on 3.0.8 to waste money on that because it will affect my defense and other stats greatly and I want to see exactly how things change before making any expensive decisions . The point to taking blacksmithing for the extra gem slots and 30k hp unbuffed wasn't really about gemming for stamina. I have a couple epic pieces of gear that I can't wear because my defense drops below 535 if I put them on - with BS I could gem an extra defense gem or two and then move to some epic gear that would give me 30k hp unbuffed as well as a lot of extra dodge. I'm currently only using 1 dragon's eye gem and when I gem the other 2 I'm planning on doing one +27 dodge rating and one +41 stam. Then again, losing mining means -500+hp so it might not really end up being THAT much of a buff.

Aside from that, having extra staming isn't completely worthless. Thats really the only thing that has changed on my DK in the last 2 weeks (went from 24.4k hp to 28.1k) and it honestly has made things that were a bit tough before quite a lot easier now. I guess its the difference between 1 more LvB/LB volley or having to 4x LHW maybe. As you can see I also gem for dodge quite a bit and will probably be replacing the gem in my earthguard chain with a +27 dodge gem here shortly.

Still trying to decide on BS vs Mining though - the 500HP is nice for mining but getting BS gives me more options and those new tanking weapons coming out still say BoP - if they end up staying BoP then it would be really nice to be able to craft one that gives +90 parry or +90 defense rating.