I think the flow should go from current #4 to current #10, play all the holes back there, then to current #5 - current #9, then to #16. I think this results in the best flow/least number of crossing fairways, and makes the course closer to having distinct sections. I also like playing the holes on the hill (current #5-current #9) in the back nine, rather than the front nine because they are the best holes on the course and add a nice change of pace at that point.
Try this flow the next time you're out there and see what you think. Other ideas for flow changes? Keep it the same?