I wouldn't spend poetics on i120 gear given that you get a free set of i115 the moment you set foot in HW, quickly replaced by i125 at lv 52-53. And you'll need poetics for other stuff, like your anima relic. Get the i120 gear if you like the looks (as glamour). I personally skipped over it (I quit shortly before 2.3 and came back in 3.0, I just used the quest-given gear and did fine).