@Maria Luna Is that $5000k monthly goal gross cash flow or net cash flow? Since I'm in both the Detroit & Jacksonville market, I have a different perspective. Average rents in Detroit are about $600-700, which puts you at about an 8 unit property for $5000k gross. However, keep in mind that a large number of the inventory in Detroit would require rehab especially based on your target purchase price. Even at a low purchase price of $50-75k in Detroit for an 8 unit (which is very possible but not be in a good area where you can charge market rent), a basic rehab budget of $5-$15K per unit puts you at an additional $40k-120k in repairs, which is essentially all of your $150k.
With $5k monthly gross before expenses (and keep in mind that Detroit has among the highest property taxes), you're probably looking at 50-60% in net income ($2500-$3k/mo). Based on that, it would take you up to 5 years to recover your initial $150k investment (repairs included) before you really become whole in the deal.