My preference would be:
PvP weapons, a 2-minute trinket, and the 2-piece bonus at least.
Ideally, if you have the time, go for a full set of the Honor gear, or most of a full set.
And then use the excess honor for PvE Justice conversion and/or buying Greater Essences, to sell on the AH.

That will allow you to be somewhat competitive in 40-man battlegrounds.
As it will frequently be, your 5-man vs smaller numbers.
And you can stick with the swarm.