Despite the increased cost to launch a Phase 3E class spacecraft into a GTO type orbit it would seem a multitude of launchers are possibilities such as:

1. Molniya 8K78 launch vehicles from Plesetsk and Baikonur. I believe several dozens of Molniya 1, 2, and 3 series have been launch since 1965. This launch would be ideal and no propulsive component would be needed.

2. China’s Long March

3. India’s GSLV

4. Japan’s H-IIA

5. Space-X Falcon 9

6. Ariane 5 ME debut 2018

Also, what happen to the rideshare option?