Merrillville is a great town to invest in, especially for flipping. I know several investors that flip in the NWI area and Merrillville seems to be a preference for many of them. If you would like further information, please email me at firstname.lastname@example.org or call 219-588-9494.
PS: There are also 4 units on the market in the range your looking at, if your looking for rental property.
Good Luck !