1 only runs from Santa Barbara to Leggett, CA (well, technically it runs all the way down into LA but most people wouldn't use it south of Santa Barbara).
So by the time you reached Florence, 1 was several hundred miles into the background. Unless everybody was doing incredibly short days I don't see how it would take more than two days to drive the entire length. I have driven the entire length of 101 (from LA up around the Olympic peninsula and then down Puget Sound to Olympia). It's a nice drive but they've done too many improvements on it and now it frequently feels too much like an interstate (San Luis Obispo to Santa Rosa and then norther Oregon coast particularly).
For no reason other than you mentioning it, here's my photo from the one time we stopped and slept in Florence:
