If you really want to get the largest possible number of plants in the space, draw it to scale on paper and draw the two different styles of row on the paper. Then see how many feet of row you have with each system. I wouldn't worry too much about whether the rows are parallel to, perpendicular to, or at an angle to the sun's travels. Most of us lay out our gardens without really thinking about which way the sun moves, and it works out just fine. As long as you get enough hours of sun, don't be concerned too much about the orientation of the garden.

i personally like the idea of numerous short rows instead of two long ones. It seems more interesting to look at. Also, you could separate the different fruits into different rows.