You should feel relieved that he is going at this stage and that you have two months rent to cover your time to find a good replacement tenant.I would continue to demand the additional months rent according to the legal contract and threaten to take him to court to collect.

Never touch a Historically designated home and if the numbers do not work you walk.I seriously doubt if you are inexperienced in flipping that you will do better than a GC quote assuming your quote is fair and reliable. 

In Oct. 2017, I learned of her new employment and filed wage garnishment toward the judgment/debt.Today, I received a call from tenant's attorney who stated that, "since the tenant filed for chapter 13 bankruptcy in 2015, I could not legally garnish her wages."

Would you be subdividing the land so that each home has its own legal parcel? 

Phrases like "hoarders" "don't understand math" and the like seem more designed to insult and to put down than help. 

@Adriana Torres-rendonI'm not an attorney, so I cannot give you legal advice.

For insurance, look at https://www.slice.is or https://www.proper.insure both are specifically designed for short term rentals and give 2 million in liability and full replacement value.

(I am not an attorney nor is this legal advise but was involved in my own family probate action)

Mostly likely you will not have to pay any gift taxes, but you will have to file a gift tax return.Also, your son would be legally entitled to his share of the proceeds. 

. ($50mil / $150k) GF currently is offering around 20 loans/month so they can certainly reach their legal max in short order.