For a buy-and-hold rental in Nashville (one year leases), here is a recent deal I did with $70k to play with.
Purchased a duplex for $155k in the 37218 zip code. Required 30% down using a local lender (Franklin Synergy) for 30 year fixed rate loan @ 4.5%. Spent $15k to fix up the place and now collect $1745 a month in rent, total from both units ($895 and $850). Each unit is a 2/1, about 850 sq ft.
Expenses are right around the 50% mark (property mgr @ 8%, taxes, insurance, capex and opex @ 10% each, lawn, water, accounting/admin, etc.). After factoring in 5% vacancy, that leaves about $2300/yr in free cash flow, for a 4% cash on cash return. Appreciation is about 6-8% a year, so overall return will be okay in the short-term, and even in the longer term, when appreciation slows down, I should still be at about a 8-10% overall return not including principal pay down and the tax benefits.
All this to say, as an out of state investor, it will be challenging to find deals in Nashville that return much better than this. You could try to go the short-term rental route, but AirBnB is a challenging business if you are not physically hands on and more importantly, pending legislation could derail your investment (i.e. I would never by an investment property that I couldn't afford to keep if I had to use it as a normal, non-short term rental).
legislation around AirBnb is still very much in Flux
Also, with $2300/yr in cash flow, replacing income would require quite a bit of capital and scale. In Nashville, you'd $750k and need to do 10 of these to get close to $30k/year! Other markets could probably return much better, but at what expense/risk?