unless this property is unsalable on the open market or your selling it for far more than its worth this is a Pass full stop.. 4% is not even close to market rate for seller financing it should be 8 to 10%and if you need cash then you have factor that into their down payment.

The rental has quite a bit but it's at a 2.875% rate that I wouldnt trade for this deal.

They are offering a 12-15 month 0% APR Credit Business lines, isn’t hard money usually a higher interest rate?

Their interest rates will be higher and they collect origination fees so the purchase price of the property is key and determining your ARV. 

$75k is best used for another house hack that way get a better rate and lower down payment meaning can put some of the money in rehab.

Currently, I'm only offered 27 hours of work per week at an average/below-average pay rate, which isn't nearly enough to save for a down payment or qualify for a loan.I've tried selling belongings to generate extra income, but it's not sustainable in the long run.

.- Only allows Rate/Term but we could add a HELOC on top of it to access cash in this instance up to 95% CLTV.Long story short, there are ways but you'd have to get creative and be over 62. 

JasonWe've been seeing both rate and coverage increases impacting Homeowners. 

You can also get a lower rate on a 30 year fixed and even though its a 30 year loan there is No prepayment penalty so you can pay as much as you want but not obligated to pay more.A Heloc is a credit risk and can "never" be used as an asset or PITI reserve which is required when buying additional properties.

Home prices have been going up for 10 years, so quality stuff is not cheap.