Will you be able to give an easy index Ton/SQF for A/C capacity to be installed in South Florida? Thansks.

I have a couple of sites I can share with you. These are quick, easy, basic calculators to give you a general idea. Because of the conditions in South Florida - High Temperatures & High Humidity, you can expect better results from a professional analysis as proper sizing is critical for satisfactory operation.

This is for whole house air conditioning sizing:
http://www.northernac.com/newcalc.htm

This is for a room air conditioner:
http://www.consumerreports.org/cro/appliances/heating-cooling-and-air/air-conditioners/sizing-worksheet/index.htm
or
http://www.goodhousekeeping.com/home/air-conditioner-calculator

I hope you find this information helpful.
Good Luck! :-)