5x12" sounds like a great format - kind of like a super-long 5x7"

And it's half of a 10x12", the closest inch-equivalent to the 24x30cm camera I have learned to love even if I have only taken one picture with it (and that's when I found all the light leaks). I'll see if the bottom half of the negative is usable, so I can get an idea of what you format is like!

What lenses have you got/are you planning to get for using with the new camera?