You put together a good plan but your diagram is pretty much the same. If you really wanted to change the park you should look at trying it on a different hill. The park right now is on an extrememly flat hill. The jumps are shaped great but speed is so hard to get. If you keep the same hill there is now way you can have a large jump line on the left. Thats where you should have 15 differnt rails. If they made the jump line two jumps instead of one you could maybe have bigger more consistent jumps.