I would say credit monitoring

Even more than credit, the more experience and capital you have, the more aggressive a lender is going to be.

I think they used to go up to like 80-85% CLTV depending on credit score.

Should We:Sell, take advantage of the capital gains law, move, and pay the mortgage off on the new house, credit cards, etc…?

You would want to look for an owner that has a loan through a bank or credit union or one that has no mortgage. 

What's his home improvement contractors license?

Despite only renting for two months, this tenant's aggressive behavior is creating a hostile living environment for other residents.Specific Issues:He complains about our lack of notice when entering the property during our own move, despite prior notification.He has moved items around the house without permission.His communication has been condescending and confrontational.He installed a surveillance camera in a common area, violating the lease agreement.He banged on the door because he couldn't use the smartlock code properly.Considered Actions:We plan to serve him with a notice to vacate.We are considering having a constable with us when we serve him the notice.Questions:Should we just give him warnings considering that his actions may not improve?

They may sell in a few years when interest rates drop or keep it longer term as cash flow on the property improves!

But they were selling an expensive house in California and had horrible credit.

To answer your questions here though:Alternative options - I was going to sell all my stocks and etfs, take out a HELOC, and some credit cards to try to shoestring together enough to the deal without a hard money loan.