Rental Property inputs - south florida

[Nathan Olds]

Hey BP. I new to real estate and looking to invest in my first rental property in the coming months in South Florida. It will likely be a triplex in Pompano Beach or a nearby area with similar expenses. I have started analyzing deals but am unsure how accurate my assumptions are of the expenses. Below is what i am generally using. Any feedback on any of these would be greatly appreciated! =)

Closing costs: $3000

Electricity: $120/unit

Insurance: $300/mo

Water/Sewer: $30/unit

Garbage: $15/unit

Maintenance: 5% 

Vacancy: 5%

Cap Ex: 7%

Property management: 11%

Property Tax: 1.5%