While looking up parking requirements for our site, I came across this:
http://city-egov.cincinnati-oh.gov/Webtop/ws/council/public/child/Blob/19292.pdf;jsessionid=88D53B14C2C7AAB99062056AC26440DA?m=18317
It also includes goals for the Urban Mixed zone, and set backs,

To sum it up, one parking space is required per residential unit, plus parking for the the Make part if the building.  This can be provided on site, or there are ways to negotiate with neighboring buildings. [ I suspect the church and its Sunday crowd would miss the existing parking lot on our site if it were gone]
Residential Units require a 10 foot Front Yard set back (all other uses do not.)  There are no Side Yard set backs for any use.  Every use requires a 10 foot Rear Yard set back.  The maximum height for any building in the UM (urban mix) zone in 45 feet.