Before I read the comments on this thread I would have automatically answered the question by choosing the finisher for the par three. But I detest slow play, so the idea of an opening par-3 that would create a natural interval is compelling. Thanks for the enlightenment.
The determining factor in this question is the lay of the land.There's a par-3 eighteenth hole at Ingleside (Fred Findlay, 1927) in Staunton, Virginia that couldn't have been anything else. The tee is shelved into a small hill and the green is benched at the same elevation into a larger hill that dominates the property. The tee shot is a 189-yard (from the back tees) carry over a deep ravine and has to avoid a pair of bunkers that flank both sides of the front of the green.
What's really fun is the patio behind and above the green. You can finish your round, open a cold one and make bets on the skills, or lack thereof, (on the green in regulation, up and downs, putts) of other players coming in.