So, I still have to unlock Heavensward zones, but I already am Item 120 avg by buying stuff in the market (lvl 54) and I just noticed my Poetic tomes are capped... I dont want to keep "wasting" rewards from dungeons due to having them capped, so.... what should I spend them on?

I am right now looking at Auriana, I hear she has some stuff that I will require for my Anima weapon, but my googlefu is not helping me. What could I buy right now to help me lower my stash of Poetics, that will help me later on?

[not sure if this is the right forum for this but i do feel I come across as a total noob with this question so...]