I think I would suggest you to take Chilblains in the 5th tier of the Frost tree. 50% movement speed decrease free of charge is always nice to have.
I'd also go with Bladed Armor (T1 of Blood). I don't know how much armor you've got, but I'm pretty sure it's over 10k, and 10k armor gives you 333 attack power.
I'm not sure about the 2 left over... Unholy Command?
I played some PvP last night and other than the fact that I had problems staying in game (weird crashes, other ppl have mentionned the problem), the actual fights where really fun. Everyone seems to do a lot more damage and that makes fight a lot quicker and at the advantage of players with quick reflexes and good strategy.
You can't run 1v3 and expect to last more that a few seconds anymore if those 3 person have at least a tiny clue of what they're doing. Hell, even my Protection pally does some amazing damage (in addition to insta-full-healing himself for 3 Holy Power... a f'ing joke
).
What do you guys think of the new system?