Currently have 7 level 100s on Kel'Thuzad Alliance. Each of them are over 670ilvl(almost fully normal BRF geared(with some BOE epics still)
All also on legendary quest line with elemental runes. Lucky for me i have two accounts so when i do LFR HM for the stones and then LFR BRF for the runes. i was dual boxing most of these....yayaya atleast i wasn't afk for every boss fight on both alts.