Here is an itinerary on Star Alliance, it is available but I'm not sure about the stop-over and open-jaw policy. If the pros could help, please.
At any rate, just to get a feeling for dates and locations, what do you love and what do you hate?
Mon 8/16 LX 019, EWR-ZRH, 21:30-11:35+1 day, Business
Tue 8/17 LX 1763, ZRH-FCO, 12:30-14:05, Business
3 Nights in Rome.
Fri 8/20 LH 3867, FCO-MUC, 6:45-8:25, Business
Fri 8/20 LH4092, MUC-VCE, 11:10-12:10, Business
3 Nights in Venice
Mon 8/23 LX1663, VCE-ZRH, 14:45-15:55, Business
Mon 8/23 LX 644, ZRH-CDG, 18:15-19:30, Business
3 Nights in Paris
Thurs 8/26 LH 4219, CDG-FRA, 14:05-15:15, Business
Thurs 8/26 LH 404, FRA-JFK, 17:00-19:40, Business
EWR-Newark
ZRH-Zurich
FCO-Rome
MUC-Munich
VCE-Venice
CDG-Paris
FRA-Frankfurt
JFK-New York
What do you think?
Just remember, when booking award tickets, you must be flexible.