BGs definitely become way easier as you gear up, hang in there.

Not sure which BGs you usually do, I suggest AB, as its one of the best ones for a box, since you can camp LM the entire time, effectively, and no one will hate on you for it. One thing to do on non-40 man BGs is to ask for lead, and put all of your characters in the same group, which helps your totems to stack.

My line usually is: "Please pass lead to any of the <insert name scheme here> so that I can move my guys together" I usually get lead 90% of the time. If someone is silly and wants to try and move you, but cant, just remind them that you have to be on the same server.

Glyphs/spec: copy myself or any of the 2k+ teams (theres really only 2 kinds of specs if you look at them all)
Lava/Shocking are very solid. The third spot goes to either Thunder/Stoneclaw or Wrath usually.

Be sure to keep Thunderstorm on round-robin, and try to space them out. At the least, one of the tricks I've learned if u want to blow all 4 at once is stagger them from one another by a hair (2 Tstorms back to back WILL launch someone twice as far, but no more than double). From videos I've watched not a lot of other ppl like to use fire nova, but in BGs, when the melee is stacking on you, its badass (use all 4 fire novas at the same time).

Another good trick is to pop 3-4 fire elementals in times when a lot of your teamates, and enemies come together, they effectively add chaos to the enemy, and do substantial AOE to the enemy team. (Bloodlust/Heroism Helps with these situations as well)

Hope this helps