I have some questions about PvP and would like some feedback on my current plan.

I have 3 Ele shammys, currently 62.
I am planning on doing PvP and Arena for points but wont be doing too much arena.
I was planning on grinding out to 69 then hitting up all the BGs to get some gear when I hit 70, but with the implementation of the Season 0.5 gear (from rep guys) I am debating just hitting 70 and then hitting up the bgs at that time. Would that even be worth it? Should I just do the 69 bgs and melt face then ding 70?

And for arena, I see lots of people doing 5v5 and grabbing another healer, anyone do 3v3? would I need a healer? I am thinking with my prev 3v3 experience, its mainly just ppl rushing and healing wont be too much of an issue.

Thanks for any feedback!