Don't ask others to help you pick your gear. Use Rawr or SimC and make your own evaluation.
Has there been any confirmation as to whether T 12 4pc is better or worse than T11.5 4pc? Also, for my situation specifically I have 3/4 T11.5 (gloves, legs, chest), with 1/4 T11 (shoulders). Would it be worth keeping those 4 or upgrading to T12 4 pc / T12 2 pc + 2 offset pieces?