I just want to make sure that I understand what I need to do. Once all of the florecent lighting is connected to the outlet all I need to do is plug in the TM751 or RR501 to a nearby outlet and add a SS13A slimline switch and I'm done? Or do you actually have to have the lights pluged directly into the transciver?
Going back to your original question, you wanted to control them with a switch. If you connect them to a standard outlet, that outlet must be controlled somewhere by a switch. Just plugging a RR501 module into a nearby outlet doesn't solve the problem unless you wire the fluorescent lights through that RR501. An RR501 can certainly act as your switch, as can a normal appliance module:
AC power -> X10 Switch -> Outlet -> Lights
AC power -> Outlet -> X10 Module -> Lights
If you choose to switch the outlet, that switch must be of the type designed for fluorescent or appliance loads - such as the XPS3. There also is a X10 switchable outlet, but people have complained about its reliability.
Jeff