New client would be required which won't work with the server as it is. This currently is not possible and thus shall not happen in the near future.
If you wish to use more skillbars, use battlemode. This ancient way of playing allows you to use 3 skill bars at the same time by using rows q-o; a-l & z-.
Hopefully this will help you slightly with your issues. As for planning out your skills. Level up to 255 and you'll have them all. For special cases, such as TK/SN, there's always Ratemyserver to look up skill trees.