So yes, it might have been posted already but I don't think many people understood the full potential of the farming route. You take most advantage of it if you are herbalism and mining because not only do you get two chests per run but at least 2 adamantite nodes, and a few ancient lichen nodes. The only problem with this farming strategy is that you need to be a frontal dps spec (not mutilate or combat daggers). Heres the video which explains the rest.
Online Video: PvPSource: Funding for Arena | Veoh Video Network
P.S. If you do five runs an hour you can get a stack of adamantite ore, 60g pure gold, 12 greens (with blues thrown in here and there), and a blue gem every once in a while.