I'm able to reach cap with:
[Inferno Tempered Chestguard] -- note, you could put 15 resil on this, I have 150 hp on mine
[Inferno Tempered Leggings]
[Inferno Tempered Boots] with a 8 defense patch
[Flamebane Helm] with 3 +8 def gems and the 20 FR glyph -- just realized I could use my unique JC +12 def one here!
[Flamebane Bracers] with a +8 def gem
[Phoenix-fire Band]
and drumroll....
[Onyxia Blood Talisman]!
That's 293 FR + 5 for the BE racial which hits 298 for me. I use the bracers instead of the gloves because I much prefer keeping T6 gloves on, being an exceptionally strong piece in terms of avoidance, stam and threat. In reality, some of your choices may be dictated by the gear you have available to you in other slots, but there's many ways you can reach it.