3% is pretty high number, i think i will use it.
Your comps are not hit capped, same i didn't used grey socket slots i rawr (seems it is reserve for testing, cause there are no so many socket bonuses in real items).
ALso rebuild your comp as much as i can with capped hit, and my hit legs comp has more hp pool +1k, but 400 armor less.
And what haste buff are u talking about? I recheked it:
https://wowwiki.fandom.com/wiki/Lich...tadel_tactics)
There are no haste buffs for lich king, only for shamblings.