So you are putting in various inputs/assumptions, like gross revenue (total sales prices of homes) less soft costs, hard costs, city fees, desired profit margin (i.e. 15% of gross revenue) = residual value (what the land is worth).

We joined Bigger Pockets to learn how to grow revenues and profits through the next several levels of business.   

This sounds like a GP/LP Waterfall deal where there's a 16% pref and the LP (you) get 30% of the profits after refinance.

I would say credit partnership meaning that someone allows me to use their qualifying credit to qualify for financing at the same time they are an equity partner on the deal who I split profits with? 

All the rental income, appreciation and profit when selling is tax free!  

I was furious, and wanted to walk on the principal of the thing, but my wife talked me down on the fact that even at $3k higher it would be a good house - and it has turned out to be, another $100k+ profit. 

It has a lower turnover than STR but can bring in higher rent than traditional leases.Co-Living Arrangements: Renting rooms individually on a month-to-month basis could generate more income than a single long-term lease while reducing management hassle.Furnished Long-Term Rental: A furnished rental could allow for higher rent and attract tenants who don’t want the STR commitment but still value flexibility.Partner with a Local Boutique STR Manager: Some local companies manage STRs with lower fees than Airbnb's traditional managers and could help keep profits up without 20% fees.Hope that helps you with your decision!

If the continuing maintenance and repairs are more than you can afford and make the property cash-flow negative, I would sell and hope that the repairs I made and the appreciation would earn me some profit.

You buy the property, you give the tenant notice of a pending increase, they pack up and leave, then you spruce it up and rent it at market rate so it's a profitable investment.When egg prices double, do you think the local grocer cries in his coffee every morning about how inflation is impacting his customers?

Proper setup from the start can prevent major issues and ensure you're profiting from the start!