give me your thoughts, north suburbs of chicago

[Mark Davis]

ok biggerpockets family, i have a senerio for you.  got a 4 unit building for sell in the north suburbs of chicago that cost 25k over apprised value but seller said they are will to hold the financing with 100k down. rents out for just over market rates leaving a noi of around 30k. so my question is, even tho he's over market and appraised value, but willing to hold the balance of mortgage, is this deal worth it? and profitable. i know i left out some key details but at a glance what do you think? Thanks in advance