For 720p 60fps streaming to twitch, you'll need around 3500kbps.
If that 10-11 is in Mbps, then you should have more than enough.
It wouldn't make a difference in encoding, because that's hardware based on your end.
yes it is in mbps, I think I will try it, and if it doesn't go well, I will stop. I'm worried about overheating as well