I converted my STR to a LTR because the climate here in the Springs (and CO in general) is so hostile to short term rentals, and it's getting worse.

Currently, one half is rented to long-term tenants, and I'm considering converting the other half into a short-term rental.

Built in 1890, this Old Victorian was converted into a duplex in the 70's by a talented architect who made some unique and extraordinary custom design choices (read Vaulted Sunlights) that make this property truly one of a kind.

Purchase price: $80,000 Cash invested: $25,000 I helped my father-in law convert his LTR to a STR recently (he's owned it for forever, but we wanted to see if we could increase the revenue by switching strategies and updating it).

These are 6 inches long with a cork back and coupled with a magnifying glass or a pair of magnified reading glasses which you can get at the corner drugstore for less than $10 - makes reading the contracts easier. 

Developers are seizing the opportunity to convert these spaces into much-needed retail and healthcare facilities, bringing new life to once-abandoned properties.The Future of Closed Drugstores: Plasma Centers, Restaurants, and Dog Parks

Plan is to wall it off and convert to a 4br/2ba,  update existing bath and kitchen, new floors,  interior and exterior  paint.

I have two thoughts.  1)  If you can convert your 401K to Self Directed IRA that may be an option to invest INSIDE your retirement account.   60K is much for buying a property but you could can lend it out to get 10%+ returns.  2)  Have you looked into a HELOC 2nd loan on you house? 

I dont know many retailers accepting bitcoin and the few that do, I wonder if the keep btc on the books or convert it to cash at the time of purchase.

Even if you intend to convert it to residential through rehab, the current zoning as commercial is a no-go for the FHA 203k which is limited to residential.