Wouldn't the equity I have play a factor in this?

Quote from @Randy Achi: This is where a mentor would come into play big for you!

Play the long game and focus on rent and home price appreciation.

A HELOC gives you flexibility since you can draw as needed and only pay interest on the amount you use, which might be useful if you’re not sure exactly how much you’ll need upfront.That said, it’s important to compare the interest rates between a HELOC and your expected returns in the stock market—if you’re making more in your investments than you’d pay in interest, it could be a good play. 

We are under contract on another right now, but it's an appreciation play.

The client was willing to gamble on furnishing for STR over LTR route and we were good for 3.5 years, then one day the man came and shut it down. 

After 45 years investing across many asset classes, many investment types, and everything from lowest risk to outright gambles, I think I finally know the answer.The biggest divide is between investments in which operational control over that investment is with the investor, and investments in which control rests with another party.  

Again several factors at play but just providing information based on your criteria.

But there are other factors at play.

The property is a 4-unit building, in a good location for the aforementioned play.