Is my P&S agreement supposed to be structured a certain way? 

But I suppose that you could allow for it if you want to and then just adjust the lease amount up to compensate for the risk.

We brought this up to the seller that there were supposedly some chimney issues that needed to be addressed.

Have his buddy over for an unannounced visit just to show him the property, "Aw, come on, I know I'm supposed to give you notice, but help us out, sport, let us in..."

Supposing I would use several sites to advertise my short term rental, would someone recommend software to keep all of the bookings on one calendar that does so in real time? 

The other 50% is supposed to cover your mortgage expense and profit.

Technically you're supposed to register as a business and pay the transaction fees. 

To avoid this, schedule closing in the last half of the month, and after the seller receives the last payment he is supposed to get, he should send a notice to SEC 8 to put payments on abatement because of a pending sale. 

@Art Perkitny that's an interesting approach and I suppose one way to rate areas.

@Russell BrazilTittle company said that are suppose to stay neutral but will try recommending a lawyer