Check out this drawing. The smaller fence line of jumps down the left side was never built. The other lines get pretty huge; each double is longer than the next. My philosophy is different. Big is fine, but if you build stuff that virtually no one but pros ride, you won't have a successful spot that is well maintained. To have a critical mass of riders who hang out there and pitch in to help, you need to have a little bit of easy, a lot of medium, and some hard stuff for challenge.
http://chuckfurlong.com/SundaysTrails/design_01.html
http://chuckfurlong.com/SundaysTrails/design_01.html