30 Year Fixed Rate Mortgage How did you add value to the deal?

It would be seen as a rate and term transaction, and your client would have to pay lender fees, third party fees and escrows.

Stay updated on market dynamics, interest rates, and economic indicators that can impact real estate investments.Set Goals and Take Action: Define your short-term and long-term goals as a real estate investor and create a plan to achieve them.

I also totally agree with what you said about response rates varying by market.

You are estimating using financing at today's rates, BUT over time you will likely be able to refinance to a lower rate.

The key is constant knowledge transfer and training so that you don't have all the domain knowledge in one person. 

Interest rates were very high in the 80s and 90s.

or...are you planning on "helping them" (adding/transferring title into your name)?

You could partner and offer a preferred equity position (i.e. payment of a set interest rate on a monthly basis + some type of fixed annualized return when you either refi or sell).But with either option, which are your most realistic options for this deal, you will have to show some significant upside.  

It looks like there are about 1,200 listings in the "Village of Four Seasons" section near the Bagnell Dam.The entire area rates really low for seasonality, so you may consider how much a week in the summer will actually cost you if that's your "break-even" time.Happy to give you more data if you're eyeing a specific property or ZIP code.