This is a sliding scale method which is also common in the syndication space as well and helps align investors with operators.

The terms obviously cover the lender's best interests first but generally are aligned with investors areas of risks. - Lender due diligence on the builder can help protect you.

Also the upcoming fall season will probably be the best time to buy we have seen in a year, the stars align, demand is slower, inventory is up and rates has come down a little from the peak.

One component of underwriting an asset for an investor. 

.- Advice - think about your long-term goals and strategize how Real Estate is going to align with your future.

All the major components have lifespans.

Refferals should be a major component of your business.

To answer your question about holding receipts, the cost seg engineer report will itemize all of the components of the property from the acquisition.

Hope this helps but of course if all comes down to what you and your wife are comfortable with and that your decision aligns with your long term goals!

Home inspectors are also a great resource if you use them properly--be attentive during home inspections, ask thoughtful questions about things/home components you want to learn more about, and a good home inspector will usually have no problem explaining these things to you.