BOEs for Unholy DK PvE

Hello. Which BoE items are worth buying for fresh Unholy DK PvE?

1x Raging Behemoth's Shoulderplates
1x Ring of Rotting Sinew
1x Battered Hilt for Quel'Delar, Might of the Faithful 2H sword after quest
1x Wodin's Wodin's Lucky Necklace
1x Titanium Spikeguards
1x Titanium Razorplate

I think that's pretty much it

Edit: Thanks Shred92 v

+
1x Legplates of Painful Death
1x Hellfrozen Bonegrinders

How about 264 craftable legs/feet?

I already bought:
* Wodin's Wodin's Lucky Necklace
* Ring of Rotting Sinew
* Darkmoon Card: Greatness

I was thinking about getting T9 4 set (helm, shoulders, chest, hands) for bonus. Would legs, wrists and boots be good purchase?
Armor Pen kinda confuses me.. since UH stacks strength, but Frost Armor Pen?