Like all the rest of the holes on this course, #5 plays about 10% longer than the tee sign says. (rumors are that the laser sighter was set on meters, rather than feet).
So, 781 + 80ish = 860ish. For most mortals the best strategy on this hole is to play it like a short par 5. Soooo, I often play XL, XL, comet, putt.