Since it's a duplex, it has one of some items (one roof?)

I own a small (72 unit) multi family in OKC and have seen vacancies go up and we have had to start increasing specials and extra items to attract quality residents to fill unit. 

Any notes on NOT to do items would be helpful. 

I would recommend taking a  look at some of my previous posts which emphasize the action items you as a rental property owner should be implementing that have a far greater impact on asset protection than merely forming an LLC.

Philly requires a period of 30-day "eviction diversion" program phase.

You may have dodged a bullet if you really forgot to check and verify all the items.

We are currently in the diversion phase (30-day Philly requirement before filing in eviction court).

Some have juiced that up too with all kind of party rental items. 

I was thinking I would create a course that involves a field trip to one of the flips I am working and pointing out all of the things they should catch and helping them understand rehab costs at a line item level.I am an expert in electrical and learned plumbing in the Coast Guard.

I'll report back what I find out from two local commercial lendersWhat did your local commercial lenders say about this item?