Is this a good rental investment?

[Kumar Appa]

I came across a 4 family home priced at 567k but it has a very high property tax close to 17k.The rents are averaging currently at $1000 per unit there is definitely more upward potential averaging at least at $1200 per unit besides good potential for appreciation.i would like to stay conservative and assume continue at $1000 per unit and overlook appreciation since it's currently only a speculation.

Please advice if this is a good investment with 20% down and 30 year conventional loan if it's not at what should be the optimal offer price of that property