So last year after purchasing my first tiny (small) home short-term rental (which I'm currently living in) and planning on investment number 2 I decided this was the path for me. 

Seems like you are already on the right path trying to add a bathroom. 

Just a few items; lumber prices are up 325%, conduit is up 50%, any product which is produced with materials from one country and assembled in a different country is taking 3x the normal lead time, at best.  

It might take a few weeks but you should be able to find work pretty fast (depending on what part of the country you will be in).  

Maybe keeping the current mortgage and utilizing the $25,000 HELOC is a reasonable path...just a little slower than the "cash out refi and buy 2 more properties" path... 

Purchase price: $25,000 Cash invested: $25,000 A quarter of an acre near Lake Travis wanted to do a multibedroom Airbnb/long-term rental since it's right outside of Austin and an area that's blowing up with rentals in the Texas Hill Country.

In areas where people often do not offer above asking price, they have been doing that all over the country. 

You can get the books cheap on Abebooks.com and support local small book stores abound the country. 

Thank you for your service and sacrifice to our country.

“If you have interest in purchasing the loan as a note and completing the foreclosure yourself, you are welcome to pursue that path with us as well as a qualified loan buyer.”