Wow, didn't realize that people were overlooking Insurance as a solution.Requiring Renter's Insurance with a substantial liability coverage amount is needed.If you agree to allowing the pet's then this is a great opening to have them sign additionaladdendums and requesting a modification to the current lease for pet deposit or pet fee.The tenants changed the original agreement by adding pets.Hopefully you have the move in check list and/or pictures showing condition of property prior to them taking possession. 

The notice shall specify the time, not less than ten days, within which the tenant is required to remedy the breach and shall be in substantially the following form: "(Name and address of tenant) (date)You are hereby notified that you have failed to perform according to the following rule:(specify rule allegedly breached)Be informed that if you (continue violating) (again violate) this rule after (a date not less than ten days after this notice), the landlord may terminate the rental agreement and sue for possession of your dwelling unit."

Taking their cash and letting them stay for 8 months is detrimental to them if they are unable to produce the income needed to maintain possession of your rental. 

It will be almost impossible to keep dirt, sheetrock dust, mud, etc from getting on their possessions too.  

She retains ownership, he makes payments and gets possession.

The sooner you do the more likely they will find your tennat still in possession of the property.

If you have the property under contract, you can ask the seller for a master lease allowing you to rent the property out on or after the date you would take possession and contingent upon closing.  

Houses were in possession of banks artificially lowering supply. 

Is this a popular strategy, trying to buy a tax lien/cert with some intent to skip over the mandated tax sale timeline and gain possession of the property?  

3)  Any suggestions on how to liquidate all these possessions once acquiring the property?