Newbie - video mining

Hello guys!
I am new to livepeer network and i would appreciate some answers to bellow questions.
I own quite much Nvidia 1080 (8gb) gpus and i would like to start video mining on livepeer network. I have also a good internet connection (min 300 mb/s upload, 500 mb/s download).
First of all, if you can share with me some of your rewards.

Questions:

  1. Which role is more profitable, orchestrator, transcoder, combined?
  2. What tips you recommend in order to maximize profitability?
  3. Other info are welcome.

Thank you guys!