would like to know the best route from toronto to orlando?

We aim for the Harbortown RV camp just south of Detroit for the first day. We never know how the border crossing will be.
The second night we aim for Corbin, Ky. We aren't marathon drivers anymore, and we like to arrive in daylight.
My trip plan shows stops in Cordele, Ga and Ocala, Fl.

We always use the Along I75 book. Look through it before you go. We gave a copy to some cousins a few years ago and the navigator gat caught up reading and missed a turn.
Dave Hunter also has a book on Florida's Expressways.