1. Depends on what you are going to do with it. /I would not bother if it is just going to sit and dry.
2. I do. It dries faster and is easier to remove green.
3. Yes, so they do not travel. Ideally I split and cover the ends before checking starts.
4. I use wax.
5.Yes, green carving is much easier.
That is my opinion, I make a lot of utensils and other wood objects/decorations. I am sure the cat can be skinned several ways.