You need to determine why his FICO is so low and ask yourself if the root of that issue makes him a good partner.If so, I would work on improving your buying position before making the purchase.

Pennsylvania is interesting because there is a specific statute that deals with this issue.

As housing investors, what roles do you play in solving this issue?

Seems to be lots of speculators though and that could be an issue. 

Make sure all leases are M2M and auto renew until non renew issued by tenant or landlord.Your lease/community rules set the standards for your community.

Instead, she would like me to provide her with combat roach baits.Is this asthma story a viable reason to decline my attempt to immediately resolve this roach issue?  

After going through my own family probate issue I knew that this is what I wanted to do.

My issue is coming up with the 20% down payment may take some time for that next property and I'd rather now wait. 

By having a LO, it reduces the risk the owner will see the success being had with the STR and decide to just do it themselves and I'm out.As for the owner not wanting to be involved with the tax or license issues, that's obvious.

won't allow me to provide specific legal advice in the forum context, I'll be happy to do what I can to give general overviews and talk about some of the issues to be aware of in real estate deals.