I think pretty much anywhere along the parade route is fine. Early November, pre-Holiday/Christmas time and post Halloween probably won't mean huge park crowds, so I don't think you have to get there super early to get a curb spot. I'd aim for 15-20 minutes and you'll probably be okay.
Just one note, I learned something new on my last trip...this parade shoots a lot of water at the guests along the parade route! I never knew that and was glad that I was watching from a distance because some folks looked pretty wet by the end (think water gun fire, not misting or droplets, but streams of water). I asked if the water was "new" and the CM said that they don't always shoot water, especially when it's cold out (which explains why I never noticed...I last watched it in December!).