I'm glad you like it! As for the size of the pages, that's just the size that the physical game is. It's pretty easy to adjust when printing at home, though.
- Press Ctrl+P (⌘+P on Macs) to bring up the Print Options window.
- Set the "scale" or "zoom" (or some option similar to that) until the game fills the page.
- For the Simple_Layout file, I think you can zoom up to ~150%
- For the Binding_Layout file, it's something like 200%
That will make hitting the bull's eyes much easier, of course, but that may be just fine for you.