Everything is possible but my suggestion would be to farm marks for the gear you need (by that i mean eots,wsg,ab) AV is way better honor then thoose and is best done at 70.

I farmed all the marks needed For my mace,shield,head,chest,shoulders,pants and gloves.

Did it from 66-69 while questing (queues were normally 20 mins)

Didnt lose a singel ab or eots and won 30% of my wsg's.

When i dinged 70 i went and bought the mericless shield wich actually is a INSANE upgrade, 5k armor is sick!

My next aim is the mace as im sitting on 17k honor im not far away... Will see how much i cba to farm before wotlk comes.

Remember that ALL honor,marks and arena points resets when you ding 71!