Is my iMac fast enough for live streaming 1080p?


I want to create educational live streams on Youtube, and need to capture my screen (running Photoshop and Lightroom) as well as a small webcam with audio - so 2 sources in total.

Because it’s photography, quality is important, so I’d like to capture and stream at 1080p, 30 frames/sec, and 4000+ kps. My internet connection is VERY fast, so no issues there, however, I want to use an older iMac. Below are the specs. Can anyone let me know if this is adequate for Mimolive? thank you in advance.

I think that machine would work just fine.