Here's what I just drew up to get my ideas down on paper. The rear/hair light and backdrop floor light are optional, but now I can see the proper way to mount the overhead camera and top light is by installing a pipe at ceiling height so I can experiment moving them forwards and backwards. Also, I'm thinking since this will be a one-man show that I need little tables to the left and right of me for video switcher and computer keyboard/mouse access. Plus I'm terrible at memorizing scripts, so tucking a teleprompter under the talking-head camera would save me a lot of grief.
Any suggestions, or am I beginning to understand this?