You can modify .msi to initiate a registration process. But every computer should be registered individually at our web server. You cannot install "pre-activated" version because Radmin activation is hardware-based.
Hello, if you don't want to reduce color depth there is probably no way to increase your speed (unless you are able to increase your broadband speed).
About your secodn question - yes, that is possible and you will get some nice "mirror room" effects.