To the person who starts page 2 (if anyone does), here's what you do. For consistency of format, I mean. Start by drawing a rectangle 6 inches wide by 8 5/8th's inches high. That's the artwork size.
I started with horizontal gutters being 1/8th of an inch wide, and vertical gutters being 1/16th of an inch wide, but that's not really important to keep to, unless you just want to.
To make it come out the same size on the screen as page one, make it 125 dpi, when you're done. If you want to keep a 300 dpi version in your archives, that might be nice, because we could reassemble it later at high resolution . . . if we ever want to print such things or something.