Coyote, I'll be direct again. The reason the plans and instructions do not say exactly where to mount the radio and other equipment is because it is not a beginner plane. This kind of kit is supposed to be built by someone with experience. This experience will teach them how to properly locate these components, and how to properly link them to the appropriate places. Choosing this kind of kit as your first build means you know none of this. People here are very helpful, but I think there are few who want to take on the number of questions you are likely to have trying to complete this plane.

I think I speak for many others who wish you would get a trainer plane. The reason for this is first, because you are much more likely to have success learning with a trainer. It's not a right of passage thing (I learned on a trainer, so everyone after me has to too), it's because this is what works best. Even if you build the Phaeton well enough to fly, it's hard to imagine that you would ever learn to fly with it. An instructor may be willing to maiden it for you, but I doubt you will find one who would be willing to turn over the controls to you. It's just not the right plane to learn on. Bad things will happen so quickly that the instructor will be constantly recovering the plane for you. I've seen someone do exactly what you are doing, built a beautiful bipe. Brought it to the field, instructor flew it around a bit and then landed. All he got to do is watch. Instructor refused to fly it any more because he did not want to break someone else's plane. Is this what you want from the hobby? The second reason people suggest a trainer plane is because it will come with instructions that are written for beginners. It will teach you about radio and tank location, radio installation, balancing the plane, etc, etc, etc.

Nobody is trying to prevent you from enjoying this hobby, or witholding information from you. They are just trying, each in his own way, to help you.