Multi Camera setup questions

Greetings, I am trying to figure out how well a multi camera setup is possible with Boinx before I actually purchase the software. I have a Macbook Pro with Quad Core processor and 16gb of ram. It has two thunderbolt ports, one HDMI and and two USB ports. I would love to hook up at least two cameras that both have HDMI output, is this do able and how can it be done smoothly, I would also need to output to a Teradek encoder for livestream purposes, any help or suggestions would be appreciated.

you will need two Blackmagic mini recorders with thunderbolt cables to ingest the two HDMi cameras:

Then you connect the Teradek over HDMI to the HDMI out of your MacBookPro and do fullscreen playout to this second “screen”.