I cannot directly answer your question, but it sounds like what you are asking would fall under the responsibility of a "production supervisor" or whatever title you would like to give someone who would determine ahead of time your personnel needs. It seems like this would require someone with at least some experience in video production. One thing that would probably help is to make up story boards for your production. These drawings need not be elaborate or great works of art...even stick figures will help you match what's on the script to the space with which you are working. It will also help you with potential camera placement and with maintaining the "eyelines" that are so important to proper editing. Have fun and good luck!