@Lolo Druff Real Estate Investing is not like Trading Stocks or Crytocurrency.Real Estate Investing requires some deep thought and research from you as an Investor.Having 400k to deploy to multiple duplexes is a great start but you have some questions to ask and answer yourself.

I think this is the single most important part of the decision in order to set you up for success in passive rental property investing.

While a lot of STRs, and properties in general, can work as an MTR, really nailing down who you'd like to serve can absolutely help guide your purchase decision on your next property. 

Given your location in Los Angeles, Vegas's proximity is indeed an advantage, making it easier to oversee your investment without the need for a local property manager initially.Research local ordinances around short-term rentals and evaluate HOA restrictions before making a decision.

If the lender used your credit report as part of the decision, they should also include details about the credit reporting agency.It’s worth following up with the lender to formally request this denial letter and ensure they’re compliant.

Income from a trade or business where a taxpayer doesn’t materially participate.2.

Depending on how much you need to raise the rents to market, the other updates in the building that are needed, how quickly you can rent to market rents will all drive your decision.

First of all, until you make a decision I hope that cash is in a high yield savings account.  5%+ right now!

You want an accountant who can help you strategize and who is responsive when you want to know the consequences of the financial decisions you are making throughout the year.Good luck. 

This approach ensures you’re making decisions based on logic, not emotion.