She did sign a rental agreement via AirBNB and my property manager.

I've read in a book that Real Estate Investment in Japan is often referred to as a "Scientific Investment" because it can be managed with profitability that is close to the simulation of earnings based on prior calculations of yields.

While the BRRRR strategy is effective, it requires experience in renovation, property management and market analysis.

I would equate it to managing yourself when you are not set up to manage properties.There is scalability in this...Now to play the Devils advocate if you get autopayments set-up you can always figure out how much interest was paid each year and what your payoff is so just decide how competent you are in that and be honest with yourself, there is nothing wrong in outsourcing parts of your business.

What is generally needed to become HUD certified property management company? 

Talk to brokers local investors and property managers.

Finding the right property manager, purchasing the right property in areas where tenants are attracted to live, and having the right strategy is what will determine your success.

This includes details about the current market trends, investment opportunities, challenges faced, property management considerations, and any other factors that may be pertinent to someone considering real estate investments in these areas.I am open to any advice, suggestions, or recommendations.

I own & manage 27+ STR & MTR.  

I have a couple properties and use Stessa as my property management app but they don’t yet have maintenance and issue tracking.