OK David, here's some tips as I understand it.
1 - Write the screenplay yourself.
2 - register the script with the guild.
3 - Never share any ideas with anyone, and even after the script is registered, its a good idea to not broadcast the scripts plot at least until you're beginning production. You never know if the person you are talking to is just an aspiring screenplay writer with no original ideas (happens more than you think).
4 - You will always find enthusiastic people when you tell them, "I'm going to make a movie", especially starving college students. If these people are exceptionally good, tell them you're beginning pre-production and when you have a schedule for them you'll call them. In your first shoots it is not so important that people have experience, but rather they are serious about making movies/films and will work LIKE professionals.
5 - MiniDV is fine, I'm not sure what a spycam is, AVID is terrific.
6 - Try to limit the amount of ideas flying around while on the set. If you want to brainstorm with the crew on ideas on how to do shots (which is a very unusual way to do it - usually you have one person with experience who can be your DP but overall the director should have the vision for the shots), just make sure its not on the set wasting time. Try to do it as early as possible so you can plan your shot schedule prior to shooting.
7 - If you want this to come across as a nice DV flick and you don't want it to turn into a clusterF*** on the set, I suggest you treat the MiniDV like film and don't shoot until you're ready to shoot the actual scene. Don't go with the truth - that you can shoot for hours and edit it later - make it one take at a time just like film.
8 - If you want to do like #7, its best to shoot your first shot on your schedule as a really easy shot... someone walks into a building, or something simple like that. Something you are almost for sure going to get on the first take. Then it sets in everyone's mind on the set that every take does matter and they will go through the whole production in that mindset.
9 - Take the time to do the shot schedule right in preproduction and have your DP or whoever will lead the crew on the technical end be prepared with where to place the camera, what equipment is needed for each shot, etc. And take the time to learn the equipment and make sure the camera operator fully understands how to operate and move with the camera!
10 - Good luck hope this helps.