@Georgia Jones To find estimated property tax amounts for a property in Tallahassee (or anywhere in Leon County) you can go to the Leon County Tax appraiser's website at http://www.leonpa.org/taxEstimator.html to help you run your numbers. I would take the purchase amount, plus the amount of any repairs you plan to put into the property and base the estimated tax on that number.
As far as insurance goes, it's not cheap in Florida. When I run my numbers I use an estimated 2% of the purchase price and repair amounts. This will include the land (which can't be destroyed) but I find the numbers work well for me. It'll probably come in high, but I like to estimate my costs high when running my numbers. If it's a good deal when the costs are high, it's a better deal when the costs come in lower. If you want to compare rates online try this website: http://home-insurance.shopandcomparerates.com/
There are many things you can do to help cut your insurance costs. First of all is keep an eye on the type of construction of the property. Here in South Florida you want a house that is of "CBS Construction" - Concrete Block and Stucco. Hurricanes do less damage to them and they're less expensive to insure than frame constructed homes. You also will want to get inspections done to the home during the inspection period of your contract (preferably by an inspector that your insurance company uses). These are: the Four Point Inspection (checks electrical, heating, plumbing, and roof), and the general inspection.
I don't know about Tallahassee, but in South Florida you would also want to look into the cost of hurricane protection for the home. "Inexpensive" hurricane protection for windows and doors for my personal home (a 3/1 frame construction home, built in 1941 and 2 blocks from the water) came in at just over $2,300 to cover 13 windows and doors (leaving one uncovered just in case we stay during a storm - we need some way to get out of the house). We didn't get any discounts off the insurance because we're leaving one door unprotected (in order to get a discount ALL openings must be protected). If we leave (which we plan to do if we get a CAT 2 or higher storm) then we will simply use plywood over the exposed door. I briefly looked into the cost of impact windows and doors for the house, but it's outrageously expensive (the front door with no windows came in at over $1,500, a French door on the back of the house was over $2,000 and the windows were a little over $1,000/each!). We do not have a garage, but if you come across a property with one make sure you look into the cost of having the garage door protected as well. Impacts or winds that blow in the garage door cause major damage (rip off roofs from built up pressure on the inside of the house).
One thing that I know a lot of investors don't bother with is flood insurance. Personally, I wouldn't own a property without it. It's cheap and as far as I'm concerned more than worth it. In the end, it's just another number that gets figured in.