It's sounds like a variation of Gambler's Choice around here, the fences have a point value, and your strategy involves jumping the high point value fences as early and often as possible.
My approach would be first, to look for the obvious direct routes and related fences, and then start looking for places where I can cut the turns more agressively and save time.
I'd also keep normal course design considerations in effect - I wouldn't want to start my course with a maximum oxer or a combination, I'd look for 2 - 3 relatively easy fences to start with, maybe with related distances, and then add in the more difficult elements.
I would also bring a pad or whiteboard, and draw the fences as soon as they're set. I'm a very visual learner, so I would need to draw and redraw the possible line and course options until I felt I had the best one.
Good luck and let us know how it goes!