I have 5 100s and they all took me about the same, 3-4 days playtime.
That is with a lot of afk waiting for que and some wandering around.
I'd say it takes 3 days playtime average no raf 2 boa pieces.
But then again healers and tanks are faster than dps due to instant ques.
Also leveling a monk now and doing great with the monk xp boost. 18 hours playtime, level 68.
From 90-100 it takes about 8-10 hours if you do it normally.