Well, I hit level 10 and I only have the Boots and Tunic to go. Still waiting for a Tunic to come up for sale or to drop, but by far the hardest part of this series, as most folks know, is finding the Whiskers from the Giant Field Rats. I have noticed some things that have speeded up the process greatly.
First, there are particular points where the Giant Field Rats spawn, so if you know where they are, you can just keep plugging away at them relatively undisturbed.
The first point is right on the hill nearest the first set of Gnoll Watchers (first set if you are arriving from the direction of Qeynos). I always sit on that hill and track, and without fail I get a Giant Field Rat within a few minutes, if not immediately.
The second points are around the center of the Qeynos wall, on both sides. Halfway between the zone line and the abandoned camps, almost flush against the wall.
The final point and the most isolated in terms of other people being around (but also the one I haven't yet confirmed) is just south of the small lake. Not positive on that one though.
Using the first three points, I managed to drop about 12 or 14 Giant Field Rats in an hour, and managed 3 sets of Giant Field Rat Whiskers (2 dropped in a row, which was nice). Got the Bracers and the Gloves right after.