OK, our itinerary is set now, and the tickets are purchased. Five of us traveling together on same itinerary. We had several criteria:
1. Decided that we did not want to be flying all day;
2. Didn't want any tight connections;
3. Mutually decided that we did not feel like traveling to Columbia, so we would do the 500K run, instead of 1000000;
4. Wanted to stay at nice places;
5. Weren't concerned about spending a few hundred dollars more to ensure it met all of these criteria; and
6. Made sure all of our flights would be on big birds, not puddle jumpers.

With those criteria in mind, here is the plan we worked out:

June 8--Fly into MIA, haven't decided upon accomodations yet.

JUN9 MIA TO CCS Aeropostal 501 10:10a to 3:00p. Airbus 320 Overnite at Intercontinental

JUN10 CCS TO PTY COPA 220 8:05a to 9:20a
Boeing 737
PTY TO SJO LACSA 652 4:05p to 4:15p 737
Overnite at San Jose Intercontinental

JUN 11 SJO TO GUA AVIATECA 910 7:05a to 8:40a 737
GUA TO MGA TACA 321 5:50p to 8:00p 737
Overnite at Intercontinental Managua

JUN 12 MGA TO MIA TACA 515 9:55a to 2:25p
Airbus 320
MIA TO PHL later that evening on US.

Picking up 1,000,000 miles in our family in 4 days, and hoping to have a great time doing it.