I don't know your level Beo~, but if you're under or around 50, you could fight the lich's in Eldieme and get exp and your paper at the same time. ^^
If not, then it should work very well, skeletons are extremely weak to MNK attacks. I'm surprised you wouldn't be able to do it like a manaburn PT and have 5 MNKs and a WHM, or even 4 MNKs, a WHM, and a RDM or BRD (BRD would be good because they could increase your Accuracy and Atk. or your evasion not to mention finale on the ones with Ice Spikes).