“Low money down payment” are you referring to taking out another FHA loan or going conventional? 

Did you purchase this with a conventional loan? 

Careful in the Stock Market, seems great on it's upward trajectory however...

Did you go the DSCR route for the refi or did you wait 12 months to do conventional?

Can you include all the lawn and yard care? 

To maximize your investment, use financing options like FHA or conventional loans, analyze deals based on cash flow and cap rates, and network with local investors through REI meetups and BiggerPockets.Good luck!

Whether you do a HML or conventional.

I have spent the last few years working in the Pre-Fab ADU space and now working with a company called Live Near Friends and help people buy real estate with the purpose of living closer to the people they care about. 

THEN, I plan to purchase the second home using a FHA or conventional loan (3%-5% down), for which I will likely pay the monthly cost out-of-pocket, maybe with some rental income support if it is a duplex.My concern is, I do not want to spend my savings or weigh down my debt-to-income ratio so much so that I cannot qualify for and pay the down payment and closing for the lending on the second home.Questions: - With the first home being multi-family, 75% of the rental income (or potential rental income initially) will relatively either maintain or boost my debt-to-income ratio from lenders' perspectives, right? 

I'm curious why you want a HELOC instead of a conventional loan in the first position.