Take care to not make your fantasy the priority. You may have this image in your head of how it will be but the reality is you won't be in control of these people. They will need to be heard and respected and it can mean that not everything you fantasize about will be wanted by all of your partners nor all the time by all/any of your partners. Your control will be an illusion created only by their willingness to participate.
That's the slippery side of fantasy. Focus too hard on making it a reality and you can find yourself not recognizing the needs of your partners when they want something that you didn't factor in or being disappointed when it isn't everything you wanted.