You're applying to start this fall? Or literally starting the application in the fall? For my PhD application I literally spent one whole semester talking back and forth between my potential supervisor and she edited my proposal and had a co-supervisor edit it as well. I would suggest to look for universities that match your area of research and have a willing supervisor, I was rejected from universities that had mainstream research because my research was not mainstream. I have a 3.9 GPA and an excellent research proposal, but my current supervisor said that the reason for rejection was because the supervisors were not compatible or the universities had little manpower to be able to fully accommodate my project.
I think you first need to make contact with a supervisor who is suited. Mine for my PhD is actually someone whose research I find fascinated and really want to study under her wing. So try that and ask potential supervisors first, show your research proposal idea and ask them if this is something they are willing to supervise