Voidwatch gives tons of cruor.
Also you could do Colibri and Bats in Misereaux Coast, thats a good place to get cruor and you don't need many people for it.
Alternatively you could do what I do, join a worm party in La Theine Plateau on your strongest DD job, get silver lights capped and just destroy the worms. My last party i got over 400k cruor on my DRK.
Doesn't say much without a time frame.
Getting 400k cruor in a 36hours xp party ain't that kicking,
but if you got it in 1 hour im impressed.
i jsut really wouldt liek to find some alternativ to doing birds colibries and bats in miseraux coast. in case its camped