I simply don't trust most of them, so I only work with contractors who will accept payment on these terms.

Most sellers would not accept the unseasoned note as part of the purchase.  

If the number the tenant comes back with is acceptable to you send them a written notice that you've agreed to their terms as a one time extension.

This offer was accepted contingent on a home inspection.

The hardest park I've had so far is the park accepting people.

Check with a Realtor in your area, not sure if the definition changes from State to State but generally it means the Seller can not accept anymore offers for the property.  

You accept the highest offer - she has to meet that offer, or no go. 

Some of them you need to look past the current price and rent to see the potential rent that it could get to easily, others you have to know the situation of the seller to see how much lower than asking they will probably accept.  

What 'ugly' factor can you accept in exchange for the great price?  

If your outlets are properly boxed I believe the type of wiring I have is acceptable, although not ideal.