Hi Jerry,
I am going to venture a guess that this is Indian Spring in Rockville, MD? If so, it's a shame but given the overheated real estate market in Washington, D.C. it's really no suprise.
To answer your question - In general terms, I think it would be better as a par 70. As examples, I will mention Pasatiempo at 64xx yards from the back tees and par 70 (5 par 3s, 3 par5s) and Cuscowilla at 6402 yards from the middle tees (4 par 3s and 2 par 5s) including par 4s of 437, 459, 428, and 454. Additionally, it has a 602 yard par 5 (uphill!) and a 217 yard par 3. You will hit every club in the bag from the 6400 yard tees at Cuscowilla.
My former club, Loudoun GCC in Purcellville, VA, is par 72 and 6583 yards. It was a neat and fun course to play but on a good day I could have nothing longer than an 8 iron into every par 4. The par 3s were 8I, 6I, 5I, 7I. Two of the par 5s could be reached with long irons following a well placed and long tee shot. I could play entire rounds and not hit a 3I or 4I.
Being a closet Pete Dye (aren't we all?), I always thought that Loudoun could be stretched another 100 yards or so and one of the par 5s made into a long par 4. Then you'd have 6650 or so and par 71.
TimT