Yeah, have to agree: tank > Cleric > dps in order of gearing priority.
In regards to Chaotic Coins, I believe I've got a stack or so on my Baz trader. Hit me up in game and I'll hand 'em over. They drop from the boss mobs in the 30-55 zones, never from trash that I can remember. Heads up, no lock picking necessary to get into the castle in CoMist for the Reavers.
Looks like you've found yourself a couple nice items to work towards. The beauty of the quests is they're relevant for your level so you continue to level while gearing. To give you an example of how I prioritized gearing: Guk neck is Cleric > Necro > Wiz/Enc, Iksar mask is SK > Cleric > rest. I kind of map out who gets what in an order, and work on it... sometimes you'll obtain item X for all your characters while working on item Y for the SK. If that makes sense.
The SK donor v1 sword is ridiculously awesome with the 3k/tick HoT recourse (item shows 1.5k dot but the focus makes it 3k) - as you can imagine this sort of healing is insane for your level. It would trivialize all the content. Now, if you want to just get into raid progression ASAP this would probably be a great way to do it. I'm not saying to not donate (I've got 3 and counting

), just to be mindful of how it will affect your experience on the server.
Oh, and this is a ways out: but I would HIGHLY recommend skipping T1 (Ssra Temple) by purchasing Tokens of Vulak (2.5kpp in Baz) to gain access to T2 (Temple of Veeshan). The key farming to access Emperor is a real pain in the bum.