I am trying to figure out the best way to fund the deal.

Areas like these typically have low vacancy rates and high rental demand.

Here are highlights of the program right from their website:Program Benefits-A 30-year fixed interest rate mortgage loan, several rates and loan options available-Down payment assistance (DPA) 3% to 5% of the loan amount-You do not have to be a first-time homebuyer-DPA provided as a grant (never needs to be repaid) or 3-year deferred forgivable second lien loan-Available statewide through a network of participating lenders.

Purchase price: $443,000 Cash invested: $60,000 I've included the mortgage, a 5% rental vacancy rate, and a 5% capex reserve.

If I don't go that route though, moving out in a year and renting out at market rates will still be a decent return.

Currently have 1 SFH that is a rental and just purchased a primary residence that I will house hack until I have enough funds or equity to look for another property.

I recommend using the fund a lender tab 

My brother is interested in selling his house to me, however, I’d like to keep the existing 2.9% interest rate on his mortgage.

I thought it was their job to look everywhere to find the best rate and terms.

As for mortgage rates coming to the rescue...