Here are some of my thoughts:Use a construction loan, which would cover all the renovation costs -If yes, which loan would be suitable?

However, this means forfeiting the potential future appreciation of your current property and could entail a time-consuming process of finding suitable replacement properties.

No, but I spent the first half of my career in banking and I called a lot of sub-tos.

It's a very risky space teeming with fraud and not suitable to a new investor. 

I started my investing career here in San Diego and moved my business to three markets in the Midwest 10 years ago.

Yes I am still with my employer which is a fire department and I plan on staying with this employer for the entirety of my career (10-15 more years).

These deals have been going bad almost every day and are only  suitable to HIGHLY experienced real estate professionals who know how to do the due diligence and assess the risk.

Are there suitable alternatives?

It allows you to input specific criteria, such as location or other custom criteria, and then highlights suitable properties.

It's crucial to conduct thorough market research, analyze potential properties, and evaluate their financial performance, including cash flow, cap rates, and projected returns.I recommend working with a local realtor familiar with the South Florida market to help you navigate the area, identify suitable properties, and provide guidance based on your investment objectives.If you have any further questions or need additional assistance, please feel free to ask.