No one knows:(It could take a week, a month or more than a year of constant followup until an owner is motivated to sell. 

From the little I know of San Antonio (I am a wholesaler who specializing in selling STRs nationwide) its not a super hot Airbnb market but the amount you expect for rent sounds pretty conservative. 

I may sell a note I own and drop it in litecoin.

They are business notes backed by our portfolio of 10+ businesses which does include some real estate.The note returns range based on investment but is double-digit. 

Simple Truths.But you can make a ton of money, if you do it correctly.Why doesn't McDonalds sell T-bone steaks?

We need to ensure that residents are not negatively impacted when selling properties.

Of you’re tired of endless negotiations, shotgunning offers to sellers who have no intention of selling, or chasing every “deal” that’s never going to be sold at a price an investor can profit, give this method a shot.  

It’s always good advice for someone doing a 1031 to actually have their replacement property under contract when they sell the original property, but few actually do this.

Any way to capitalize on this garage outside of just attracting higher rents once I move out and/or higher sales price if I decide to sell?

If it's not selling, you need to lower the price.