@Thomas S. The 1% amount is a guideline, not a rule despite what many people think. The major difference between Charlotte and other parts of the country is that taxes are much lower here. I own several properties that I don't get 1% on and they are excellent investments with $500+ cash flow a month (including PM, CAPEX, Maintence, ect). Granted these are $300K+ properties but should not matter.
@Joey Hampton I would be surprised that a $90K property can rent for $1,500 to $1,600 a month. For your size home these locations are typically Plaza Midwood, NoDa and Elizabeth however the values are much higher. I'd be interested in knowing what location your home because I would be happy to buy up as many houses as possible in that area for the price you are indicating.
If you do not have the downpayment you can refinance out of your FHA loan and use it again. Just know that your Debt to Income (DTI) needs to be high enough to pay for both mortgages with no rent, because you do not have enough experience to include future rents into the equation.