ASK HN: How to plan and manage a large web project?

Hello fellow HN readers. I wonder if I can spare 5 minutes of your time, if I may please. I have a very large personal web project that I will be developing over the next 6 months. This project is much bigger then anything I've ever done before, and I am really struggling at the moment. I want to plan and organise my project in a efficient and logical way so when I hire/fire coders others, and myself can understand everything that is to be done. Usually I just jot things down in a notebook, or write a to-do list for the smaller projects.

I am thinking of using a brainstorming application to help me with this, have each feature of the site on its own branch and then branch off of that with its comments/solutions. Could you suggest any good applications for helping me with this? Or is there a better way to plan ideas/solutions?

I also need to start looking at svn/cvs repositories as I have never used one before to manage revision control of a project. What is the best way to start with this? I have done a little research into subversion and git, but really I am clueless as to which I should learn/use.

The last thing I need is bug tracking, I usually just write down bugs I find in my applications in my notebook and fix them as and when. But seeing how large this project is, and the use of multiple programmers. I want to keep everything in one place, so we have an up to date list of bugs and a history of old bugs, should they give us trouble at a later date. What can you suggest for me?

I don't know if I have asked the right kind of questions here but I have a million things running through my head at the moment that I just want to manage and develop this project in a correct and professional way. If you have any suggestions on the planning, and management of a large web project could you please share them with me?

Thank you very much for your time and I hope you have a wonderful day!