Here's how this rental looks. You buy 4 units for $560,000 with $176,800 in cash (down payment, closing, and initial repairs) and a $420,000 loan at 7%.
Rent is $75,600 a year at full occupancy. After 5% vacancy and $31,228 of operating costs, NOI is $42,392, a 7.6% cap rate on the price.
After the $2,794/month loan payment you keep $738 a month, 5.0% cash-on-cash. Break-even occupancy is 81%.
Held 10 years and appreciating 3% a year, the sale nets $347,026 after selling costs and the loan payoff. Total cash back $497,694 on $176,800 in: 2.82x, IRR 13.0%.
It misses your target on cash-on-cash. At your 6% target cap the property is worth $706,540, and $495,792 is the most you can pay to hit 8% cash-on-cash with this financing.