ZF is actually not that AOE friendly compared to SM cath, or even later instances like Sunken Temple. It is still doable though, just with a little more caution.

I did it with my 4xmage team & 1 priest without a 70 to help, From 44 up to 46. You just need to be aware of how many Blood Drinkers, & those shammie types that drop the healing wards.

Once you get your pull size down, get a few levels, & get out of that instance & into sunken Temple as fast as you can, its much better xp for less work.