I've armadyl'd ever since it came out, so I know what i'm talking about here.
You can do it. Just bring people with similar stats or better, and armadyl teams usually always want 4 people. They'll not want to go with anymore or anyless, although some greedy nerds want a team of 3 (trio), or a duo (2).
With your stats and a nice team of 4 you should easily last 30 kills..
For gear, wear an armadyl plate (cheaper than skirt and better), veracs helm, zamorak chaps, wizard / dragon boots, accumulator+rune cbow (kind of obvious), dragon sq shield, fury, barrow gloves, 300+ diamond bolt (e).
Inventory is always:
Mithril grapple
Tele
Pouches (if you use them)
and for every super restore you have, bring 3 brews (but having 2 extra restores). For example, I have war tortoise, so I bring 11 super restores and 27 brews.