A couple things:Personally, I loathe the arbitrage model.

In fact, during my short stint as an aspiring BRRRR investor, I successfully secured a pre-approval for a private money loan based on my net worth.Now that I’ve shifted to land investing, I’m wondering: Do private or hard money lenders exist specifically for land flips?

An engineering backed modeling study might be good for this type of property.

I dont believe in ever losing money and lean towards the cash flow model, but recently I walked into a property with maybe $100.

In fact it's the exact opposite, 1% of commercial agents don't know what owner financing is after doing this model daily and speaking to 100's of commercial agents.

These methods include:Detailed Engineering Cost ApproachDetailed Engineering Cost Estimate ApproachSurvey or Letter ApproachResidual Estimation ApproachSampling or Modeling ApproachExperience or “Rule of Thumb” ApproachFor further details on the methodologies, refer here.WHAT ARE THE BEST AND WORST PROPERTIES FOR COST SEGREGATION STUDIES?

This strategy aligns well with long-term hold and appreciation models.6.

We also have different single family and duplex models available.

Alternative rent models (STR, MTR, rent by room, etc.) do not necessarily do better and are more work.  

Don't pay because he really isn't a good role model.