Total rehab of mixed use property

[Young Moon]

Hi everyone - I am in the process of looking at a mixed use property (one commercial storefront and 8 residential units) on one lot and was wondering what the major pitfalls were in taking on a project like this.  I have done rehabs of individual residential properties (mostly carpets, paint, appliances, fixtures, etc.) and they were pretty straightforward, but I wanted to see if there were any issues that are different for these type of mixed use properties, especially relating to permitting, zoning, etc.  I have architectural drawings obtained by the current seller as well as a zoning determination letter saying there are no zoning violations at the property and it is considered in compliance with the Zoning Ordinance and the described uses are "permitted by right uses".  At this point, is it just a matter of hiring a contractor to pull the permits and getting the work done?  Any advice would be very much appreciated!