RDM/WHM/WAR looking to do BCNM 20-30'sFollow

Heya. My mule(aka old character) has quite a number of beastmans seals, and since I do not play with him anymore, I wanted to put him to good use.

I was looking to group up to do any BCNM's 20-30 my char a RDM/WHM could be part of.

Jobs i do have:(i can level any up to 15 for BCNM 30)
WHM 13
RDM 30
WAR 10
RNG 10
BST 10

jobs i dont have(dont want to level on old char)
BLM
NIN
Everything else

Also any advice as to which BCNM's my job would be needed/suited for would be appreciated.