Again, I really don't think age should be an issue other than for Cloud and the girls. I mean look at Barret's life history, and his attitude, that would so fit an older guy better. Rude could be any age, but I think the turks would seem a bit unproffessional if they were all kids.
I like the idea of Mr. Miagi for Bugenhagen, doesn't anyone think David Borneaz would suit Cloud?