I have tanked 4 bosses so far with ~133k unbuffed HP, 11.7% Dodge and 12.9% Parry, 46.4% Block. There has been nothing in any of the encounters that has challenged my health, aside from mistakes on my end or the healers. Actually, some of the trash has been more trying than the bosses.
Nothing has changed this raid tier compared to the previous 7 or so - in regards to gearing. (normal mode) Raids are usually tuned for players in gear about 1.5 tiers below what drops in the instance it. If the raid is dropping 359's that means it was probably tuned for those in ~340 average item level gear.
Getting to the stats listed above would require getting nearly every heroic 5 man piece you could get and some crafted gear.
OP - you're good to go
Failure is not an option. It comes bundled with the software.