Just as some general information:
There are no preorder lists that you can sign up for.
Which models will be covered 100% in the end remains to be seen. At the moment, it almost looks as if the PCB layouts do not differ at all, apart from tiny details.
The coolers are still in development, as we are still waiting for two graphics cards in order to carry out physical tests with the samples. After that, it will take at least another six weeks until they are available. In short, you will certainly have to be patient for about another two months.