These are really being a pain for me at the moment. I'm thinking Emperador de Altepa is going to be the best option.
Maybe a MNK, WHM, BLM and 2xBST's? Everyone can use Superior HP atma. double/triple 4K needles can't be stunned, so presumably a nice easy way is just add acouple of bsts to eat it up, especially if they just using HP/PDT atma's to be there to eat dmg.
Any other options for these seals welcome, or advice on quickest way to succeed on the VNM route.