Florida should be busy currently with people staying in the Winter to get away from the cold & snow. 

At least in my area, it's cheaper to own a condo with the HOA dues than it is to pay for all the utilities, snow removal, waste management, maintenance, etc, that goes along with an SFR.

I love the concept especially given the need in your market for storing things like snow machines, boats, rvs etc, but also for repair or general "fab shops".As long as you are seeing the demand in your specific market for these spaces, and perhaps its worth getting some leases signed up prior to breaking ground but thats a personal preference thing, I think the numbers look promising if the use case is there.

If you plan on STR then you will have to do snow removal and lawn mowing.

Looks like Tim and Ezekiel have provided a bunch already...What are costs associated with snow/harsh winters?

Consider cleaning, lawn care, snow removal and supplies as well as utilities  in your calculations.  

You also have snow removal and salting when you own apartments and it can be pricey.

If you find the property in mid-January but don't want to close with snow on the ground, then submit your offer with a 60 day closing and you'll be purchasing it going into spring. 

@Karl Kauper with a SF you can require the tenant to take care of lawn and snow, but they might not be up to your standards. 

Location. 25 minutes to beach, 40 minutes to Florence, 15 minutes to Pisa, 60 miles to snow skiing.  10 minutes to Home Depot style store, etc.