The longer you wait, the more likely mold starts to form and creates additional expenses and damage for your project.

He backed off.My insurance agent advised me in the future to have myself named as an additional insured on the renter's policy so I will be notified when the policy got cancelled.

Should I be doing anything additional knowing he is running a business out of my house?  

I feel the same way - I don't think that the property next door being a burnout should keep me from acquiring the home.Putting up fencing is a great idea!

I don't do anything with list generating. but once you have located a potential property you might want to acquire, that's when my platform can help.

I recently reviewed a buyer's agreement which stated 3% on gross selling price, plus $695 flat fee in addition to percentage, for services provided. 

Many lenders will charge additional rate increase if loan is under $150K.

Additionally, consider consulting with legal and financial advisors to solidify your agreement and protect everyone involved.

If the Tenant’s visitors stay outside of the 14 days; Tenant will be charged an additional $50 every 14 days that the Tenant’s guests are staying in the unit.Is this legal for me to do this?

Keep in mind, the transactional costs of selling a property in Philadelphia with the high transfer taxes and brokerage fees (althoug these are expected to be reduced in light of the landmark NAR settlement that occurred yesterday), adds additional transactional costs, especially in instances where the home was purchased as recently as last year as is the case with your home.