naw they will probably come out huge. you will have to resize them. A Front cover is normally what? 12CM x 12CM? so i guess a scan like "Insert 2" which has 3 pages will have to be resized to 12CM x 32CM. then you gotta combine the front cover with "insert 1" & do the same (12 x 32). Lol kinda a long process.
I'l try to do it right now, and post them here
P.S: I dont know what the back cover size is tho :-/
you'll lose too much quality. Small fonts will be blurry/unrecognizable. Do you have Photoshop or any photo editing software? In the print properties make a custom size for the image. Even shitty packages like hp photosuite have this option.
12.1 x 12.1 cover
11.8 X 15 for the back usually works for me. They both sit nice.