This is a great topic.
Options
-Start 'em off easy for a hole or two, make it tougher later, get 'em out and going (Kemper LAkes when it opened in Chi-town even had a printed paper they handed out which gave architectural descriptions, strategy and theory). This works well with public accecss, for sure
-Knock 'em fead right from the start, length doesn't have to be excessive (Cog Hill in Chicago, NGLA's #1 green is a bitch. #1 at Pine Valley gives you a taste, harder as you get to the green, WFW-tough, )
-Par 5 for an "ease into the round" (Slows play as people go for a green in 2 they can't reach-I really don't like this approach)
-Par 4 or 5? What does "The land give you?" I prefer not a 5 for reasons above, but a long hard par 3 as #2 or 3 can back up a course especially public.
Personally, not that anyone cares, I don't like Par 5's as #1, 9, 10 or 18. Flow goes well if you don't have a par 3 before say #3, 4 or even 5, long hard finishers have become a bad cliche, really awful. Two or three 4's to start give a good flow, but sometimes the land makes the choice for you unless you've got a bulldozer and a housing plan, then Katie bar the door!
Which brings up another thought which I'll put out as a thread.