Pleasure @Simon Thomas.This is for @Robert Downs to comment.What we have been doing to simulate the BRRRR method is creating company entities and selling the property from one entity (usually the developing part) to another (the property management part).

I'll re-due the simulation with both units and update the numbers.

That's the same simulation that posits if an axe-murder asks you if your family is home because he wants to kill them, you must answer honestly because lying would be immoral. 

Run some Projects with MSB.ai for AI engineering simulations and Hago Energetics to advance previous CO2 conversion work.

@James Peterson has the best answer here especially in this part ""but in the long term, your rate of return will be much less than here in California".I actually did a simulation comparing this two outcome, so hypothetically if you have half a million and invest at one MF in CA and 10 Midwest SFR with 1.4 rent value, the IRR and total 5-year return could be the same because the rate of appreciation in many cities is still 7-10% whereas midwest is 2-4%.However, the actual probability of achieving these numbers in reality, within CA the number is actually much achievable because the appreciation and job growth in CA is more deterministic.What I found is if you can find MF in CA that has cap rate at least 7% and you can rehab it, you're doing good in terms of appreciation and cash flows.

look at City Zenith software to create a digital twin it allows for 1 standard design to rapidly be applied for all site variations and saved for submission to a modern Planning commission to run simulations for all utilities and impact on the surrounding area.