Midwest cities with populations under 300,000 typically have cheap property taxes.

Makes sense to keep 60-80% LTV debt on rentals (to me).I will add;  I'm fortunate enough to invest in a lower cost higher performing rentals state of GA and I do advocate buying at DSCR of >1.5 absolute min and my typical was 1.7 and due to rent appreciation all are over 2.0.   

That's a typical scenario and could cost you $10,000 - $15,000 so that would be a good starting point for your reserve.But there's more!

The repayment terms for a 401k participant loan are equal monthly/quarterly payments of principal and interest (typically prime plus 1%) over a 5 year term (longer if used to acquire your principal residence).Please note that if you take a full $50,000 and then pay back the loan, you can't take another $50,000 until 12 months after the first loan was fully paid back.Per the loan offset rules that went into effect with the 2018 Tax and Job Act: if you leave your job and the loan is current at the time you leave your job but then the loan goes into default because you left your job, you will have until your tax return deadline (including any timely filed extension) to make the loan current by depositing the outstanding balance into an IRA (and thereby avoid the taxes and penalties that would otherwise apply).Please keep in mind the multiple loan rules:Under those rules, the sum of the balances of a participant's outstanding 401k loans under a single 401k plan (using the highest outstanding balance of each loan over the last 12 months) can't exceed 50% or $50,000 whichever is less.

If so is there a typical investor profile? 

In my experience, a successful BRRRR typically comes down to two main things: finding a good deal and managing an efficient renovation.

Although Reunion community does typically cater to a different demographic so it won't be as much of a pitfall. 

Additionally, there typically are additional state protections (outside of the agreement) based on where the fund is located.

The real estate investing industry uses "Classes" to rank property performance risk, but there's NO agreed upon industry model:(Here's what we use for our Metro Detroit market:Recommend you first figure out the property Class you want to invest in, THEN figure out the corresponding location to invest in.Property Class will typically dictate the Class of tenant you get, which greatly IMPACTS rental income stability and property maintenance/damage by tenants.If you apply Class A assumptions to a Class B or C purchase, your expectations won’t be met and it may be a financial disaster.If you buy/renovate a property in Class D area to Class A standards, what quality of tenant will you get?

I typically don’t read a post that long but yours kept my attention. :-)