I'm not 100% sure, but I think you can have only one 9 near a corner, because Romeo and Juliet always mirror each other's positions horizontally. I only noticed that like last week, after a VERY long time just thinking they were on the same row.
So I think the max would be a total of 67.
That's 8+8+8, 7+7, 9+11+9, either middle of 3rd row or 3rd from bottom row.
Or near a corner, 10+11+7, 9+7, 8+8+7. Either way, total of 67.