Haha, if worst comes to worst you could always just get someone to say the lines and just change the pitch/speed (although then syncing becomes a problem).
It might be interesting to note that Aqua's seiyuu is Megumi Toyoguchi, who voiced Paine in FFX-2. It would probably be helpful for people to refer to her jobs as other characters to get a feel for her voice if anyone's thinking about trying Aqua's.
If I recall correctly, her Japanese voice is pretty low (overall, Aqua strikes me as a kind of manly person). Are you still looking for a higher voice?
