So we just took a look holistically and for us it wasn't worth the hassle for the few hundred bucks more a month.AZ passed a law that STR was allowed, if you are in an HOA then they may dictate some restrictions (min rental duration, need to pay some fee etc). 

Formulas are for budget only.You have to take an holistic approach from there.

Call around.Commercial lenders will focus more on property NOI and less on DTI but they will take a holistic view.

If you continue shaving off your expenses, redesign your holistic approach to asset accumulatio toward things that directly influence your ability to become financially free, get this raise, and take some synergistic and calculated chances at some opportunities, you could definitely accumulate several years of runway over the next two years and be in an excellent position to make the dive into entrepreneurship, relative to your current position!

I recommend you look at your situation from a holistic perspective and not just purely from a financial perspective.

I do want to look into the water sensor -- that's a good idea.Your specs above are a great way to start with a holistic architecture. 

Seeking holistic health, which has been effective, put us in some debt.Started looking into investing and moving to Mesa where my doctor is located.

But custom touches like how to arrange the cabinets, how high they sit on the wall, where the pantry unit is, etc, all has to be thought of in a holistic manner.

I also plan to operate (eventually) the non profit I started (holistic healing for trauma survivors) partially out of this property and an LLC (events etc.)

I have big big goals and dreams for this and it is my true passion, I have a background in holistic therapy and doing this work brings me so much joy!