A few things you can do to make your life easier rounding stats out:
If you're doing the daily heroic regularly, save up and get the 232 tank shoulders (Conqueror's Wrynn's Plate - Item Set - World of Warcraft). This'll sacrifice some of that block rating you don't want for expertise that you do, plus a bump in HP, defense, and a blue socket to boot. The same really goes for any of the 232-level gear, but since you don't seem to be in ToC raids, they'll be slow in coming.
Alternatively, since you've got XT down, you could go for his shoulders (Shoulderplates of the Deconstructor - Item - World of Warcraft) for the hit bonus, and save your triumph badges for something like the 232 BP instead.
Also, for hit, you might look into swapping your wrists for the 213 badge wrists (Bracers of Dalaran's Parapets - Item - World of Warcraft). It's a defense rating bounce, so you can do it right away without worrying about dropping below 540. Those should hold you over until FL drops his tank bracers.
The rest of it should just come along as you gear up in Ulduar, honestly. It's pretty easy to avoid the block gear there, and most of it is absolutely drowning in hit rating. Expertise will be a bit harder to come by, but not impossible. Don't hesitate to hang onto your T7 expertise gear and swap some of it in as necessary to suit your needs.