You’re high as far as rent. I’d guess $1300 maybe. As far the rest, I’d say:
* HOA shouldn’t be above $250
* Property tax will be $150 (1.2% of 150k) / 12 mos
* Repairs won’t be $75/mo if you fix it right in the first place
* Insurance will be about $20 per month. HOA covers the buildings themselves. Landlord’s insurance is basically liability. Choose a number slightly greater than your net worth.
After adding vacancy and unexpected costs, you’ll likely end up with 6-7% assuming no mortgage. (Cash on cash, which provides a good way of comparison.)