Re: the Plan, I think what you should do is let me read it and then I can tell you what I think :P Or maybe I just want to read it. But seriously, all I can tell you is my process, which is: I have an idea, I come up with a conflict (usually internal) and then I write my story around that. No scene is extraneous. I never have to take scenes away--usually I have to add them. I write the bare bones of the story, and then I go back and add the flesh. Does that make sense? Clearly, not everyone writes this way, but if you're looking to try something else...
As for the Badfic Challenge. I've run many challenges. If this is not an exchange, I think the easiest way to run a challenge is to create a community and allow people to post their fics to the community themselves on the due date, or even links to their fics is good, too. Every challenge I participated in in SPN worked that way and it was great. The writer has control over how their work gets posted and readers can easily find the fics. You can make an index of links no problem, and even edit tags to make finding things easier. Then if you decide to run it again, you've got the community all set up.
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As for the Badfic Challenge. I've run many challenges. If this is not an exchange, I think the easiest way to run a challenge is to create a community and allow people to post their fics to the community themselves on the due date, or even links to their fics is good, too. Every challenge I participated in in SPN worked that way and it was great. The writer has control over how their work gets posted and readers can easily find the fics. You can make an index of links no problem, and even edit tags to make finding things easier. Then if you decide to run it again, you've got the community all set up.