It sounds like you're already in shape to handle the mileage. So that leaves preparations and your skill handling traffic.

Not showering all day after getting all sweaty is not good. You'll end up with jock itch, I bet. It is a nasty fungus you don't want to have. At a minimum, you may want to get some baby wipes or Sure Wipes to clea up that area.

There is an oft-recommended book around here, The Art of Cycling. I'm reading it now and learning a few things. It is mostly about urban cycling, but a lot of it can apply in suburbs too. There are some good techniques mentioned in there that I want to try some day when I'm feeling brave, such as artful curb-hopping.

Bring some Powerade or Gatorade and some extra food. You'll need it if you don't want to be beat before you even start work.

I assume you have bright jerseys and proper biker shorts?

How about a way to carry luggage? Do you have a rack and a rack bag? In FL, that is probably the way to go, as you will sweat up a messenger bag or backpack pretty quickly.

That is awesome that you get to work outside in the shade. I guess it doesn't matter that you'll stink either?