Toronto to FL, Newbie need some advices.

Yes. I would suggest that a trailer that size would definitely need a weight distributing hitch. It must also be set up correctly- the dealer should do that but it may need adjusting later depending on how good the original setup is. I still use a WD hitch on my Sierra although it does not take much equalizing- I would still never tow without it. I only tow light boat trailers with a drawbar. Practise on some of the more rural highways outside of Toronto- avoid the 400 series until you have more confidence. Practise backing up in a mall parking lot- one where there is lots of room. It will take a while to catch on. Extra mirrors and a person to guide you helps.

Good luck.