Option 1 is very similar to the cabs found on Pac-Man, Centipede, Asteroids, Missile Command, Tempest, etc (think early 80s). The over under (Option 2) came in to vogue in the mid 80s and stayed with JAMMA. You'd be fine with either. If you go with a single door, stick with the two-slot one. The smaller single slot ones are a bit too small for a full-size cabinet in my honest opinion.