I'll try...
I'll try to answer a few of your questions:
How to lose the least amount of muscle?
Right now recovery from your injury is priority. You will lose muscle mass and strength. The muscle will come back quickly once you're able to train fully. AAS or GH without the stimulus of training hard, extra food, etc isn't going to do much, if anything. It might help slow the muscle loss the first few weeks, but not much else. GH and anavar may help some with the healing process - again, not dramatically without being able to train hard.
Taking extra vitamin C is a good idea certainly, but will not help the rate of healing unless there was a deficiency to begin with. The rate you heal will be dictated by your genetics, but you should heal completely given enough time. Not to be discouraging here, but you're probably looking at more like 4-6 months for this to really heal fully. You MIGHT be able to "test the water" just a little bit with VERY light weight after 2 months (8-9 weeks), but for CT injuries, full recovery WILL take more like 6 moths rather than 2.
Working other bodyparts?
Maybe, but for the first 4 weeks or so it'd be best to let this just settle down. Even working other bodyparts you're going to have to go lighter so you aren't breathing hard, or straining in order to lift. LIGHT calf raises with a belt around your waist for weight, leg extentions, and seated leg curls might be ok - you're just going to have to try it, and strat out VERY light!
Don't know about the "flack Jacket" idea, but a powerlifting shirt is definately out until you're pretty fully healed. Just getting into one of those is real work, and will pull your arms and ribs all over the place.
Supplements?
Again, good overall idea, but won't increase healing rates much, if at all, unless you have a deficiency, which is pretty unlikely. Don't look for these to make a real big difference other than keeping you healthy. Many of Weil's opinions are, well, to be taken with a grain of salt. He's an "alternative practitioner" (must be alternative to established science, like most of them), and much of this stuff is, so far, unproven in rigorous studies.
I know this is discouraging, and NO ONE wants to hear that it's going to take months to heal, but you WILL heal, and there's no reason (unless you get impatient, and re-injure yourself!) that you can't recover fully, WITHOUT an ongoing "weak spot." You should be able, eventually, to return to everything you've been doing, and even more! Just give yourself time to heal, and don't worry about losing muscle mass - you will, but it'll come back fast!