The interest rate ended up at 9.3% with a 9 month term, interest only payments.

Can try to reposition to Class B, but neighborhood may impede these efforts.Vacancy Est: Historically 10%, but 15-20% should be used to also cover tenant nonpayment, eviction costs & damages.Tenant Pool: majority will have FICO scores of 560-620, many blemishes, but should have no evictions in last 2 years.

They will counteract that by having you put larger down payments or leave more equity in the property so you are less likely to walk away from your asset. 

We’ve got about $175k in equity due to the large down payment needed to assume the mortgage. 

I told them that it was a better idea that, instead of buying a home first, we can buy an investment property and keep renting after we build some equity, sell it and put the down payment for 2 houses or a duplex and live in one and rent the other one (for me, i could keep renting until we buy a lot of investment properties and then move to one of them), but my family wants to buy a home firts and then the investment property.Can someone give me a light of what is better or the pros and cons.Thank you so much.

You can't deny based on non paycheck income source. 

If you make this a balloon payment in say 5 years, you've helped your cashflow, and you can refinance to pay out the balance of the 2nd mtg.I do have to ask though - you seem quite emotionally invested at this point - what are average house prices in this neighbourhood?

Securing a rental property is an exciting venture, but gathering the down payment can feel like a mountain to climb.

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.

So, with that your buyer will likely have to go with a different route than a conventional loan which will likely require a higher down payment and have a higher interest rate.