Because you have three audio sources, you need a mixing board, a Fast Track Pro, 2 mics, a slew of cords and adapters.
Here is a handy reference picture.
2 xlrs, a head mic, a stick mic, Fast track, usb cord, mini-to-phono adapter, Mackie soundboard, Phono-to-mini cord. We tested the audio using Some online conferencing product by Cisco, but in real life we will be using Adobe Connect. Whhot.