WSG is my least favorite. The strat is for everyone to go on offense grab the flag and cut off their flag carrier coming back. This allows you to cap the flag without having to worry about respawns.

My best suggestion would be to completely skip the BG's until you hit 70 or just do AV's. Any of those lower level battlegrounds are full of twinks with gear that is way past what they should have. Giving them a ridiculously large advantage.