puredrifting
Major Contributor
Going with a printed background in your situation is smart. The thing you HAVE TO HAVE for good green screen is SPACE(read: separation between subject and green screen). Talent only 3-4 feet off of the bg will be trouble. For a standard interview type green screen shoot(which would be similar to what you are wanting to do) I usually tell people we need at least 7-10 feet separation or forget about it.
100% agreed, green screen in small room is a compositing nightmare. Spill everywhere, almost impossible to keep spill off of talent. If my clients can't give me a location with at least 10' from talent to BG and another 8-10' from talent to lens, I don't shoot green screen, I just tell them let's find another way.