Wow...
Just finished the quest as a 60blm/whm 30min ago
And from my experience... the vine is the hardest... Deadly Dodo is nice to camp, you just farm meat until it pops.. (i killed 4 times before drop)... I decided to go after Nue first, took me a long time to get to the spawn point, killed the placeholder 2 times before he popped, can't tell much about him he dropped on first kill for me... Now for my friend Morbolger... At first i didn't know when he last spawned... so i started camping at different hours until i saw him for the first time and he got claimed... (he is very camped)... Second day i come 3 hours before pop, from what i saw he's 21-24hr pop... he pops after 2 hour and gets claimed ><
Today i went there 3 hours before last pop, and after 3 hours, he pops i claim and kill ^^ (100% drop!), so now i have a brown belt in the AH for 400k... Good luck!