I like that you can setup different virtual accounts for security deposit let's say, or to separately ledger cash collected through a rent to own contract.

Provide clear instructions on where and how to pay to avoid confusion.Recover Security Deposits: The current property manager is legally obligated to transfer tenant security deposits to you or the new management company.

There really isn't a safe, secure way for someone to protect their interests.

My investors acquire with cash as a routine investment strategy to secure properties quickly and eliminate competing buyers using financing.

I know that the general guidance is that emergency funds aren't to be invested, but given our financial security and the fact that we already have a personal e-fund in a safe, non-volatile location, would it still be crazy/unwise to invest this 15k in an S&P500 index fund in a brokerage? 

This means you can sell, lease, or pass on the property as you see fit, just like any other property owner.Full Ownership RightsYou have the same rights as a Mexican property owner, including the ability to sell, lease, transfer, or mortgage the propertyLegal SecurityThe Bank Trust is a well-established legal mechanism in Mexico, ensuring your investment is secure and protected under Mexican law.Renewable TermsThe trust is set up for 50 years and can be renewed indefinitely, allowing you and future generations to maintain control over the property.Estate PlanningThe trust makes it easier to pass the property on to heirs, simplifying the inheritance process and reducing potential legal complications.Although the process might initially seem complex, it is entirely managed and supervised by a reputable banking entity.

The sellers had put so much pots, plants, planters and shrubs out that I thought there were too many plants/planters that would require a new owner to upkeep.After a few potential buyer tours/showings, the owner heard all the comments (via the security cameras) about how there was a "lot going on with the plants and stuff out front".

Glad to hear you were able to secure it.

Loan Security: The property will serve as collateral for the seller-financed loan.

Over-budgeting is critical to ensure that renovations don’t eat into your profits.Market Fluctuations: If property values in your area do not appreciate as expected, or if you face a market downturn, the amount you can refinance for may be lower than anticipated.Financing Challenges: Securing financing for the initial purchase and rehab, as well as refinancing after the property is rehabbed, may be challenging, particularly if the property is located in an area with fluctuating values or if the rehab work doesn’t immediately improve the property’s appraised value.Tenant Risk: Rent collection and tenant management can be unpredictable.