With the hateful set, the titanforged chest, and the furious accessories, you can hit over 2100. If you do JC and go for the +111 spell power battlemaster trinket you can hit 2300.

If you plan on getting higher than 1600 I would save your arena points and start buying furious gear (1600 for gloves, 1700 for pants, and up). I'm not sure if it's possible to hit 1850 this late in the season anymore without any furious gear (we're sure having trouble with it, all I have are the accessories and mostly hateful and I can barely put a dent on any of the 2200+ teams), but if you're on a roll I'd save your 3200 arena points for the weapon/shield.

Then again each furious piece is a massive upgrade over hateful (30-40 spell power per piece + a lot of stamina)