It's not so much gear requirements you need to worry about so long as you have af, a recent weapon and your accessories aren't 20 levels behind. Worry more about proper rotations, cooldown usage, positioning and avoiding bad stuff. I've seen a drg with the lvl 44 gc weapon outdamage a monk with ifrit weapon on demon wall (a bad fight for dragoons) simply because he knew his job... and the monk clearly didn't.
If you can, I'd definitely recommend making a group on your server for your first few runs in AK... there's quite a few toxic <censored>'s in DF who will quit immediately on encountering someone new to the instance or rage and harass you for one innocent mistake. I think (hope) this will get better soon though when people have to start paying to play.