deal or no deal? phoenix area multi

so here is my 1st deal, please let me know your thoughts.

4 unit multi, 3, 2 bedroom 1 bath apartments that currently rent for $600, and a detached 3 bed 2 bath SFH that is rented for $985.

There is coin op laundry on grounds and a swimming pool. The taxes are $1900 a yr. Owner pays water and trash that averages $ 250 a month. The MLS#5259536

I'm currently under contract for the property and want to make sure that I'm not making a mistakes before it's too late.