Need I be concerned with UBTI?

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? 

To whom this may concern, I am an investor looking to buy my second property.

This aligns with my interest in passive income.I realize I am not cut out for the entire REI process of consistently finding multiple properties for particular exit strategies.

Should they be concern?

I've done this on one house in order to cut costs - since then, I've added a meter with the utility company but it's a good workaround for the short term. 

A HELOC comes with a variable interest rate and all signs are pointing to no further Fed rate cuts in 2025 - and there may even be rate increases.- So, you may want to consider locking in an interest rate via a 2nd mortgage.Do you have reserves for unexpected expenses?

Ask for seller concessions to cut down closing costs.

Would the 9-year balloon concern you, knowing you'd need to refinance or pay off the balance at potentially higher market rates in the future?

We have zero concerns of squatter in SWFL.