Need suggestions for equipment and software to record and stream lecture

Hi, I'm hoping someone here can help me.

I wish to record and stream a lecture. I've done it so far with a simple webcam and open broadcaster software, but I want a better result. Specifically, I need this: A stream/recording where I can see the speaker in the bottom corner, and his/hers slides on the rest of the screen. I figure that to do this I would need:

1) A camera pointed at the presenter.
2) Some way to copy the output from the presenters laptop to include it in my stream.
3) A microphone (preferably wireless) that the speaker can carry.
4) Software that can handle putting this together (maybe open broadcaster software would be enough).

So my question to you guys is: Can you recommend a setup for me? Thank you.

Edit: The Ephiphan Pearl (demo here) seems like something that would be perfect for our needs, but it's way out of our budget at the $5,000+ price. I'd like to keep the costs beneath $1000 if at all possible.