I have a client who wants to shoot a short promotional video where he plays two characters who are on-screen at the same time interviewing each other. I've done many shoots with green screen, used masks, and composited discrete elements, but I've never shot a scene quite like this.

The set is two chairs with a small coffee table in between. The interviewer and interviewee would sit in the chairs. The entire scene may be shot against a green screen, or it may be shot in a live environment - that's still to be determined.

I've thought about different approaches to shooting this, and have come up with three approaches:

A) Use difference masking. My concern is that the mask may not be clean enough.

B) Use a split-screen. My concern is that the split will likely have to run down the middle of the scene and the coffee table, and may not appear seamless.

C) Shoot each character sitting in the chair against a green screen, and shoot the coffee table individually against the green screen. Composite all three elements (2 characters and 1 coffee table) together in post.

I think (C) may be the best option and allows the most flexibility in post, but I'm curious to hear what more experienced shooters have to say.

Many thanks in advance - I appreciate any advice you can offer.