This is really too much to answer and many of your questions have already been addressed on this forum.
Please have a look at the technical pages of the web-site, visit the Wayfarer Institute of Technology or search this forum for answers. Another good source is the Wayfarer book, a “bible” no Wayfarer sailor can do without. If after having digested all this information you still have specific questions, I and others will be more then happy to answer those.
BTW, your boat is a mark-2, not an SD version. The latter has a double bottom and side ports to drain water. Your bailers only work while sailing at speed. They let water in to your boat when open and not sailing. A double bottomed SD version will bail even when moored.