No, don't do that. The plant needs those fan leaves, especially the larger ones, to produce energy. If you trim them all off, you might very well kill your plant. Unless you're doing SOG, or a fan leaf is obscuring the amount of light that reaches a bud, I would say leave it. Others may disagree with me, however. You can trim the plant without harming it, but you should look into the matter by searching the forums first.
In theory, yes. In practice, no. I personally would only remove leaves that obscured the buds, as I said, because the plant derives most of its energy from those fan leaves. Most of the fan leaves will fall off naturally anyway as you get further into flowering, as it depletes the energy stored in them for bud production. Don't worry.
Yes. This late in the game, it's probably better to play it safe and hold off on the experimentation. Experience beats anything else, and you'll have plenty opportunity to develop your own methods with those clones.
Some people choose to cut the lower buds, as they don't produce much and require energy as well. So, in the interest of the developing main colas, they sacrifice the bud down there. Personally, I used to just provide them with more side lighting on the lower branches. This is perhaps just another case of personal preference. I never really saw much noticeable benefit when I snipped 'em.
