This is PERFECT!!!! I have only only question: Where, or at what point would I indicate that I already have a seed???
This is specified during wallet file creation (or after you select File -> New/Restore). You simply select the "I already have a seed" when prompted by the wizard:
Just be sure aware that the seed only covers the private keys it generated itself. If you imported keys into your wallet those are not backed up by the seed!
You shouldn't need to worry about having any private keys that aren't covered as Electrum does not let you import private keys to an HD (aka seed based) wallet in the first place. They can only imported into an old style keystore wallet which needs to be manually backed up.