Eh, if you want to use T10 you might as well use a striking dummy.

For your reference, I use 3 str accessories, 2 melded str/vits, have no parry aside from my Dread Axe. I always have to throttle my dps in P2 because we push too fast and the 3rd add is up before I can path/the monk can DK bahamut for giga, (I drop fracture, rotate SP/SE, don't use berserk) and I am usually in the 320s. One run I had our SCH stop DPS completely in P2 so I could go ham and I think I finished with 342 or something.

280 is respectable, you are definitely worth your static's time @ 280 - get rid of those pants and hands (get the dread versions) and get the dread fending or slaying ring to lose that useless parry. You are doing a good amount of damage @ 280 though and its nothing to scoff at.