Since PITI = Principle, Interest, Taxes, and Insurance you could look for anything that lessens any of those variables. 

@Haiden WelchReal estate investing requires hands-on experience and a strong foundation in financial markets, business management, and real estate principles.

This is why I emphasize education of real estate principles, law and finance are essential for the real estate investor.  

You will get 1000% more experience this way, for the same money, and if you go above and beyond for that flipper, they may partner with you or even pay you for your work (principle of reciprocity). 

Selling to yourself from your LLC to your IRA would be considered "self dealing" in that it isn't an arms length transaction since you are a principle/owner on both sides of the transaction. 2.

If you want to figure out the value logically, you can create a spreadsheet that will show your cost of financing and principle paydown on an annual basis to figure out the break-even date between the seller-financing price vs paying market price, but with bank financing.You mentioned a 40-year term, but is there a balloon?

Anyone know if paying 1 huge principle payment at the end of each year would pay it off faster verses bi weekly payments?

Same principle 

Anyone know if paying 1 huge principle payment at the end of each year would pay it off faster verses bi weekly payments?

Assets identified in this study include:Permanent Fixtures: windows, doors, bathroom fixturesStructural Components: Roof construction, drywall, wood framingBuilding systems: water heater, electrical distribution, HVAC, plumbingInterior Construction: Wood flooring, stairs, ceramic tileThis engineering-based cost segregation study included the following methodology:Physical Inspection through a site visitDocumentation review including architectural plans, accounting records and construction documentsA cost analysis which utilizes engineering principles in order to allocate costs to their applicable asset classificationsCalculation of the depreciation schedule using MACRSAs a reminder, bonus depreciation started to phase out in 2023.