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. 

You want Someone who is just in it to get a return and have a great partnership.

I have looked at over 100+ houses and OPM is for using less of my money right now and keeping that into the stock market which gains a more lucrative return on average.

We have several weeks go by without any issues - and then some weeks it's non-stop. 

Adjust return based on holding time and risk reward.

Your best returns with the lowest headaches will be SFR in a non HOA area :)

Deep cleans 2x a year if not quarterly are a must if you want top return.  

For your existing rental property, the net rental income from your Schedule E on your most recent return will be used in your DTI.

That way I know with less equity upside upon renewal or backfilling the higher cash flow helps make up for some of that with the overall return.  

If want outsized returns look for cities with areas that are gentrifying as this is where you can get above market rent growth and appreciation.