Based on the CU's loan calculator, we can finance that over 60 months for a $320 payment. 

Just about everywhere in the US uses some version of IRC for its base code and then makes some changes to that as they feel necessary for their locality.

Obviously tough to give advice based on minimal info and no info on your personal situation.

On the surface, the deal seems appealing, but there's a catch: the asking price is $475,000, which is about 18% over the market value (based on comps and DealCheck estimates around $402,000).Details of the DealProperty: Duplex, 2,400 sq. ft., Purchase Price: $475,000 ($197.9/sq. ft.).Estimated Market Value: $402,000 ($168/sq. ft.).Financing Terms: 2% interest rate, with a 9-year balloon.Unit B Income: $2,049/month (Section 8 tenant through November 2025).Unit A Income Potential: Similar rent or higher; Section 8 cap for the area is $3,234/month.Monthly Loan Payment (P+I): $1,386.Cash Flow Breakdown (if both units are rented at $2,049/month):Gross Rent: $4,098/month.Vacancy (10%): $410/month.Operating Expenses (37.3%): $1,376/month.Net Cash Flow: $943/month.Key QuestionsWould you be comfortable paying an 18% premium for financing at 2%, especially in a market where current mortgage rates are closer to 7%?

My endgame is to end up with $300k/yr in post-mortgage income in 20 years based on investments I make now followed by continued investments over the next 10-15 years own.

The cost of a cost segregation study varies but typically ranges between $1,000-$15,000.

In the meantime I would touch base with lenders and get the financing squared away.

They use demand-based pricing like anyone else who cares about revenue. 

Or a seller finance calculator showing the monthly payment based on negotiated price, interest rate, down payment, etc.

Without that network, self-management would have been nearly impossible for me.Here are a few thoughts based on my experience:1.Showings: From out of state, you’ll likely need to rely on a trusted person to handle this.