The city is now requires either of the two below prior to allowing for renewal of your rental license. 1) A lead safe certification (Valid for 4 years)2) Or A lead free certification (Permanently valid) YOu will not be able to renew your rental license in many Philadelphia zip codes without one of these certifications which has to be uploaded  this certification to the Philadelphia Lead Certification Submission System (link below).https://leadcertification.phil...Site below gives you more information along  with deadlines by zip codeshttps://www.phila.gov/2019-10-...Hope this is helpful.

I don't know that's going to cover 3 hip roofs, six ac systems, 60 unit paintings, 36 new carpet jobs, 12 kitchen/bathroom remodels...What are market rents?

Lastly, what are some good systems or software for direct mail marketing if I want to go that route?

Never been audited but the system is pretty honors based anyway.

I would build on your specific skill-set before I ran out and started slanging solar and security systems.  

Most commercial buildings that are at least 6,000 sq ft require a fire sprinkler system.

If you tried to do that into a different city or state, it is likely something will break.If you use 3rd party property management, it is helpful if you use the same one across your properties because each one has different systems and processes. 

I've assumed the electrical and plumbing systems are in decent shape, but I understand those could be huge wildcards if that ends up not being the case.

I can then use Dealcheck, or whatever system you prefer, to analyze the properties to provide comps.

It used to be Cozy.co before the parent company of apartments.com purchased them.I would not waste money on security systems.