I am not super familiar with Alsip, but I do have relatives in Oak Lawn and we sometimes drive through the section you are considering. It does have lots of apartments nearby, and that might not be the best thing.
Firstly, I think you seem to be getting a heckuva low priced home. That can be a good thing, but you really have to get good data on what is selling nearby. According to the stats the median price in Alsip is only $123,500 -- a huge 40.84% decline year over year. Oak Lawn is at $160K down about 20%, and Blue Island at $145 is down only 3.97% -- now that reflects what has sold and might be distorted by small number of sales, but it still is something to be concerned about.
Real Estate: Community Map, Attractions, Schools & Crime Statistics -- chicagotribune.com
The single most troubling thing on that page is the poor performance of the schools -- people that buy SFH detached home want good schools. If they can get a better school in Oak Lawn then THAT is your competiton NOT the fact the seller wanted $179K. You have to be very careful to make sure that you are not overpaying in a declining market ESPECIALLY if the school are declining and the crime may be increasing. Entirely possible that you are walking into a sinkhole...
That said, you have to be PROACTIVE and get involved in doing everything you can to a) maintain & improve your property AND the block you are on b) do everything you can to make your WHOLE area SAFER by getting to know the cops and the trouble spots c) taking an active interest in the SCHOOLs, even if that just means knowing what they spend money on and helping to spread the word that GOOD SCHOOLS are important and worth being an advocate for even if you do not have kids.
Good Luck!