PVP spec for level 60?Follow

So, my warlock is level 60, and I plan to do AV as many times as possible this weekend before levelling up to 70 afterwards. However, I am unsure on what sort of spec may be most effective for PVP at 60. No matter how I calculate it, I can't get both UA and Shadowburn on my talent build at the same time, goshdarnit.

So... The options I see are these:
Felguard, Imp Shadowbolt + Bane
Felguard, imp Corruption and imp shadowbolt
41/0/10 for UA, Imp Shadowbolt + Bane
40/0/11 for Affliction with Shadowburn
SM/ruin, but dunno how good that is for PVP.

Too many choices. Right now I am just specced for levelling in demonology, after finding that outland mobs liked to eat me too fast when I picked up adds as affliction. Going demonology helped my survival significantly and didn't gimp my kill speed.

I have the cash to try a couple of different specs during the weekend, so please make any recommendations on things to try out.