The 2 units that are rented are covering the mortgage so yes there's room to lower the price on the other 2.

We owe $154k on the property and the interest rate is 4.25%, the monthly mortgage is $1050 with taxes and insurance.

Consider duplexes or triplexes that can help offset your mortgage and provide steady income while you figure things out.

You have to adjust your expectations to match current reality, which includes higher mortgage rates, higher prices, more expensive taxes and insurance, more competition, etc.

I own one rental property with a mortgage of $3,400 and rental income of $3,300.

You may be able to deduct mortgage interest and property taxes before the property is in service. 

Not much to add to the good advice already written, exceptYour mom could easily get a reverse mortgage to pay for her care, then you and your brothers could split the equity left upon sale.

Rough calculations on what I need to be looking for:90k deal (purchase and renovations to get max rent)20% down = 18k from me80% bank loan at 8%, 20 yr amortization = 72k-------------------------------------------------- Here's my DSCR calculation:Calculate Net Operating Income (NOI):Monthly rent: $125040% expense ratio (taxes, insurance, repairs, vacancy) = $480NOI: $1250 - $500 = $750Calculate Monthly Mortgage Payment:Loan Amount: $75,000Interest Rate: 8% per year (0.08/12 = 0.006667 monthly)Loan Term: 20 years (20 * 12 = 240 months)Monthly Payment ≈ $627.83Calculate DSCR:DSCR = NOI / Monthly Mortgage PaymentDSCR = $750 / $627.83DSCR ≈ 1.20Therefore, with a $75,000 mortgage at 8% interest over 20 years, the DSCR is approximately 1.20

If your primary home is financed with an FHA mortgage and you can get a second FHA mortgage if more then 100 miles away. 

I've been teetering around the idea of house hacking once I am done with college, but a big issue I have come across when speaking to a mortgage broker is the fact that I need to prove 2x of the mortgage in monthly income.