I really don't think there's enough content for so many. Half the stuff on disc two was already pure padding

I think three episodes would be reasonable and concise thanks to the general rule of three that has been tried and tested since antiquity. But you know SE and how they do things nowadays - they'll probably go with seven or something. I just think I'm gonna lose my mind if I have to endure a whole disc devoted to Wutai (NO MATERIA ALL GAME!) or the Great Glacier - and this one is likely to happen if they end the previous episode on Aerith's death.