Eric, please keep in mind that I am not a trained hydrologist, just a civil engineer that comes in contact with wells a lot. A filter between the pump and tank is a good idea, especially if you are going to install a WS. It will keep grit from getting into the system. I found that a filter between the WS and the rest of the house helps with taste as well. That one is up to you.
From what I found with a stop into the Florida DEP site was that it seems the Dept of Health handles residential water concerns for FL.
Maintenance....
Wells are only expected to last about 18 years from what I've been told by drillers. But many wells I've dealt with are 40+. Have your water tested periodically. Once a year isn't overkill. Make sure that your well cap is above grade so that surface water can't enter. This is probably the most common source of bacteria and organics I've run into. If you DO find your bacteria levels higher than you like or what is recommended, consider "shocking" it. There should be a procedure on the DoH site for Florida. Caution: You will be using chlorine to shock the well so care should be taken. Also, if you have a high iron content to your water, "shocking" your well may be the last thing you want to do (chlorine will oxidize the Iron and make a brown mess of your water).
Over time, sediment will build up at the bottom of the well. Along with this, there will always be a "cloud" of turbid water at the bottom of the well. If your water starts to look cloudy, it could be that the intake for your pump needs to be raised.
All that being said, check with Florida DEP or Florida DoH for your guidelines. Just keep in mind that wells need just a tad more awareness on your part than city water. Educate yourself and you'll be fine.
Oh, and remember, well water (for better or worse) doesn't usually contain fluoride.
