Well, atm, AV weekend is hands-down the best honor-grinding spot in the game. All BG weekends are your friends, but, on AV weekend, plan ahead and invest some serious time there, farming honor. It’s much more fun with a friend, but AV’s rules prevent joining as a group, which can make it a long, lonely grind filled with PuG newbs if you’re unlucky. Also, always make sure you’re in the queue for AB, WSG, and AV, if possible, to maximize your honor/hr during long queue times. Worst case, if it looks like you’re in a turtle in AV or WSG, you always have a shot that another BG will pop, providing you an escape hatch.
Almost every PvP character in the game, whether they’re in BG gear or 5/5 Merc Glad, uses the Veterans Pendant and Rings. The gloves, bracers, and belt are debatable, somewhat, depending on profession and class, but most people use them. It’s been hinted some of them will be updated for 2.3, but no specifics have been given, so be aware of that when making your decisions.
The sergeants cape and insignia trinkets are both being updated for 2.3, but are currently slotted as PvE rewards. The PvP player base is not happy about this, especially considering the rather massive PvE grind associated with the gear. Personally, I’d buy the cape in an instant, even now, and grind out the other cape later. The cape is cheap, less than 10k, and still comes with some very hand stats.
As a lock, Seal of the Excorcist is a ring you’ll certainly be interested in, if you don’t already have it. Look into it and save your shards.
For both of you, Engineering is a nice pvp profession, with a few usefull tools still allowed in the Arena. Tailoring can be great for locks in world pvp and BGs, for the Netherweave nets. Good CC vs those pesky magic/fear immune spamming melee players. Wish these were available in arena. 
