Tertiary stats will be w.e you get lumped with. They'll be pretty rare so 'going' for them wont be that much of an issue I think. Honestly socket bonus > any tertiary stat.
As for weights crit is lowest, almost useless out side of the extra damage and ss procs (which again have been reduced) so you basically want haste/mastery on all your gear. Haste is better for ST mastery is better for multi target/aoe. With the fights in SoO and the first tier of WOD being mostly non patchwork i'll be going mastery>haste but obviously at some point a balance of the two will be best.
<-- not mathy enough to know what that balance is but with 588 will have alot of both tbh.