Okay, so I did some thinking..
As it stands (Mixed 2/2 HE and DD, all +6), I can squueze a bit over 3k (id guess prob around 3.2k) and 7% res. I could, however, trade that 7% for about 520 more PDef.
Opinions? I plan on doing a mix of arena (not hardcore 200 ticket per day spams, lol) and PvE. I figure 7% would be enough to allow me a chance in random fights in open world, and do okayish in Arenas. If it matters, I'll be using a +7 Glaive of Sudden Doom.