Eh, I'll throw my hat in the ring, why not.
I was just as, well, neurotic as you were in high school, so I get it, kind of. Let me give you a couple of vignettes of people I met who were quite successful and got into top 10 schools.
1) Guy named Scott. He wasn't terribly involved in EC's, didn't do much as far as I could tell besides go out on weekends, but he somehow got a 4.0. Got a perfect 1600 on his SAT (when it was still out of 1600, God I'm getting old), took a bunch of SAT II's (math and physics-related) and rocked them all. Did AP Physics as a Junior (the only one in our class). His hook? He was a seriously amazing golf player, his dad is some big golf magnate of sorts. Got into Princeton ED.
2) Girl named Katherine. Great grades, good SAT score (I think it was about 1400, although I'm not sure), good SAT II's. Really didn't have too many EC's except she was an amazing athlete- nationally recognized as of High School. Had her pick of Ivies but chose Stanford because it had the best athletics. Her athletics were, of course, her hook.
As for me, I did a LOT of stuff in high school, and let me tell you, no one asked me about the things I actually wasn't that involved in. Interviewers could smell "resume padder" from a mile away. I was asked about my "hooks" (I speak a bunch of languages and I have some music/literary stuff) and little else. And I got into my top choice. Incidentally, my GPA was good but not amazing (around a 3.6 if I recall correctly) and my SAT was pretty good (1480 maybe?). And while I'm thrilled with the outcome of it all, I made some big mistakes in high school. 1) I didn't have much of a life. 2) I did WAY too many things JUST to pad my resume and which I eventually had to quit. I played sports, which I was terrible at, and quit after a semester. I actually "started a couple of clubs" and they ended up failing because I didn't have the time or the passion to really nurture them and make them hugely successful. It sounds like you have some free time, but it's on weekends- that doesn't really count as time you could be doing something for your club. Most of the club meetings and events happen on weekdays. And it has to be a pretty compelling idea for the school to give you funding to "organize lectures" and all the other stuff you mentioned. Ambitious, not impossible, but certainly improbable when you already have so much on your plate.
I'll agree with everyone else on one point: your weekends are free for a reason. I know you want to be proactive about getting into the college of your choice, and that's certainly admirable (and no, technically where you go to college doesnt matter, but I picked the place I liked best and I'll never regret it, even if my state school would have been cheaper). However, part of getting into college is being able to talk about your life- which means that you have to have one. When admissions people ask you what you do for fun, are you going to start listing EC's? Do you have stuff to talk about other than what you DO? If you're bored of being home playing videogames, read a book. I'm serious. Oftentimes, you can come up with new and exciting ideas when you read random stuff. Teach yourself a language, teach yourself to cook. Learn pottery. The sky is the limit, and anything you do that is unusual and "personal" will be a great, interesting "hook" and talking point for your interviews.
Colleges want to know who you are and will pick you based on your personality. So have one. Having a hodge-podge of activities, regardless of their "quality", won't give them an idea of who you are. They'll just see someone with less-than-stellar grades and way too much stuff on his plate, and wonder if 1) you were too immature to realize your activities were ruining your gpa, or 2) you overextended yourself trying to look impressive. Trust me, it's much better to present yourself as a focused and cohesive individual than an overwhelmingly busy one. It won't be impressive, it'll just be puzzling.
