As things have been standing so far, you're actually progressing 20 ilevels per 6 months. The intial poetics gear is i120, for the time being, only fcob can provide you with the means of rising it to 130 (we're talking strictly tomes gear); when World of Darkness aka Final Tower gets here, they'll probably add the carbon items to hunts and the gear will jump another 10 ilvls with people zerg rushing hunts for them.