I do encourage you to list on VRBO as well - most of my bookings do come via AirBNB but VRBO still accounts for a meaningful percentage.  

You can use cash-out refinances to extract more equity forever.

Ideally, I achieve infinite ROI via the BRRRR but I do not achieve a full extract of my investment unless I get a significant assist via appreciation (so I fail on the infinite short term ROI). 

Goal is to extract equity from this project ASAP for another. 

Successful people rarely have a lot of extra time and you need to make it meaningful and worth their while. 

Extract your capital and do a 1031 exchange into a MFR that can generate better returns.Some notes about your analysis:Since you already own the property you'll be able to refi pretty quickly, but in a typical BRRRR you should expect at least a 6-month seasoning period before a lender will refi based on a new appraisal.You're missing the following expenses:CapEx, should be around 15% when combined w/ RepairsManagement (10%) always include this even if you plan to self-manage at firstVacancy (8%)These additional expenses make you cash flow negative, even at 60% LTV, which is why I recommend selling this property.

Rates are low and you have solid equity to extract so now would be a good time.  

I would echo the two posts above me in this point: the key right now is to not worry about the tenants, rents, calculators, etc. as all that will be less meaningful if you buy an unsound money pit. 

Really, I'm looking for a way to extract and build upon the equity I already have in real estate.

I am anticipating a meaningful profit on a residential rental property sale in a year or so (the sale is contingent on certain zoning changes the buyer should be able to achieve).