First off, How do you monitor the server without Exchange? SBS monitoring relies on it. How do you backup e-mail? Or is email just not that important. It seems horribly silly and inefficient not to be using the capabilities that you have with the system.
As for the file copy utility, script it. There are MANY, MANY ways of scripting a copy - including Robocopy, xcopy, xxcopy, and probably other tools available. You can kill yourself looking for a GUI, but there's not much that can beat XCOPY /E /C /H /O /V /Y x:\*.* y:\*.*
And how are you doing system state backups? Or are you not at all worried about how you would restore your operating system should windows fail?