Hi! Thanks! I hope you enjoy the game. :)
So the way I did it for the prototypes was to print 2 pages on the front, and 2 on the back, of 8.5x11 (Letter) sized paper.
I thiiink you could do Legal if you cut them in half, and then arranged them accordingly, but I didn't test it out that way. So I'd be interested to hear/see the results if you go that way!