What is a good deal?

[Marek J.]

Hello I am Mark. I live in Chicago IL, on the south side. I want to be a real estate investor and make this my second income / business as a long term goal.

I want to start out with a owner/ occupied tri plex or fourplex. I read many books on real estate including the biggerpockets books. 

I have a question, and that is what is considered a good deal for a triplex / fourplex in the Chicago area ? ( $100,000 a unit )?

I see many ranging from $315,000 to $400,000. I wouldn't mind working on it and improving it myself. 

Obviously with the rental property calculator I can analize the deal. 

Should I just shoot for 8- 10% Cash on Cash return?

$200 a month per unit in net profit ? 

I would be paying 20% down on a property to avoid PMI/ MPI

I don't mind the area that much as long as its safe, clean, and functional building.

Some areas that come to mind are Berwyn IL, Archer Heights,  La grange, Bridgeview , Stickney, and any other areas. Anything around Midway Airport and within 35 mile radius or so.

Also, Is there a way to find out which zip-codes have the lowest property taxes ?

What would typical expenses be on a triplex ?

Insurance 

Water/ Sewer

Garbage

Thank you so much.