Would appreciate feedback on potential first deal

[Matt Gooding]

I would love feedback on things I need to consider or whether this is a good deal to get started in real estate investing in. 

Details:

-4 different town home units, each unit is 2 bed 2 bath town home. 

- 90k / unit. 360k total investment

- Owner financing from family friend who owns them. 5k (1,250 per unit) down. 355k financed at flat 5% interest rate. No PMI. 30 year amortization table.

Cash flow stats:

Costs: $476.43 principal+interest, $47 insurance, $70 taxes monthly, $35 HOA monthly dues, $55 Property manager

Total monthly costs (for 1 unit): $683.43

Each Unit currently rents for $825 / month with very fast turnover so very little vacancy.

Cash flow: Positive $141.57/ month / unit (total $566.28 monthly).

This seems like a great deal. Is there something I am not taking into consideration?

Thanks in advance for any feedback!