I can't answer all of the questions, but I'll try and get what I can. you can definitely chamber the maple body to reduce the weight. Search through the forum and you'll find plenty of posts on it. As to how much it will affect the sound, is (and probably will be) debated. I would tend to say that simply because of the lack of material and density, it will mellow out a little bit. It is just a question of how much which I can't answer. Some people leave barely any edge of the body and it is still strong enough, others will leave like a half inch but both will keep a strip down the center for the pickups and bridge to mount to. As for the strap button, I know a lot of people that play Jackson's other than the strat shaped, like to move the strap button onto the neck plate, or at least that area. Since again there you have either no, or little front horn.