Hasn't this franchise been dead since the PS2? I wonder how big it's actually going to be these days.
That said, 300k likely wouldn't make it any bigger than God Eater 2: Rage Burst. Possibly not much bigger than Sword Art Online either.
Sometimes revivals of old IPs work well. If this will be proper SaGa game with some budget behind it, I don't see why gamers shouldn't jump. Maybe not a 400k title, though.