Excellent work! Utguard Keep was a biotch, but once I finally got past it the rest was easy. If your lacking tank gear, get a set of level 70 crafted Cobalt armor. Also at starting at 74 to 78 each level there will be 2 peices to upgrade through crafting. It will provide a great boost to your tank. Also it takes like 38 cobalt ore to make, so like less than two full stacks. You should be able to buy the ore and find a BS to make it for you well under 50g.

My only tip as far as the final boss goes, is take it slow on the first part. By this I mean, do not blow all your high dps cool downs or mana dump at the start, use a more mana efficiant rotation and get to full health while the valkyrie is talking away, as the second life hits a lot harder and thats where you want to max burst him down.