Project Development Issues

I've been trying to plan ahead as much as possible for my capstone. Unfortunately, time moves faster than my planning. I believe my biggest issue is going to be time, I feel that time should be everyones biggest issue. I realize that sometimes you just HAVE to get things done and that time will become irrelevant when you get to that point. The time issues I forsee myself running into is getting my script done in enough time that allows me to have sufficient time to do the rest of my pre production. I'm a little concerned with the budget, but I already own a camera and audio equipment, so the bulk of my budget will go to feeding the crew and any props that we would need, as well as gas to get to different locations. Another thing I may have to end up paying for is some sort of music for my video. The biggest aspect of how time is my largest problem is based off of the other people working in this project. Everything that I'm having an issue with right now, is on me. It is my responsibility and I can control how fast or how long something takes me. Everyone else helping with my movie has their own schedules. This is going to be the biggest obstacle to overcome, to get all of the actors I need for each scene at the same time the scene is shot, get them for the whole day, and have them drive to wherever I need them to go. I suppose that could be filed under team issues as well. My mentor and I are working well together so I don't see that being a problem later on. Just mainly resources and time. Resources being, the people in my movie. The best thing I can do for now is get a schedule down for myself and get the schedule for everyone working in it and hope that they adhere to it.