You just described the way I launched my first comms network constellation[0] - basically loaded a whole bunch of satellites on a single rocket and deployed them on slightly different orbits, so that they'll spread themselves out as the time goes.

Only mid-launch I figured out I could just put three of them on Kerbisynchronous Equatorial Orbit at 120° phase difference :/.

Yes, KSP is absolutely amazing for learning this stuff :).

[0] - useful if you're playing with RemoteTech mod, which prevents you from operating unmanned spacecraft if they don't have a radio connection back to a proper command centre.