In all I end up saving maybe 20-40% on the job depending on how much I pay myself in labor.

I would never fund a newbie .. and if I am doing something like this for myself out of my home market that I know very well.. instead of paying for a guru course..

You may be required to make estimated tax payments when the property sells.It depends on what your 2024 total taxes due were and 2025 estimated total taxes / withholding / estimated payments are.If you pay in atleast 90% of the current year tax or 100% / 110%(Depending on 2024 income), you are normally considered good.You may want to consult with an accountant for more clarification.

This seems unlikely in the long run. you are forgetting that someone is paying down your principal for you so you need to take that into consideration. 

Expect to keep paying.

The rental income from the first home will pay for the mortgage/monthly costs.  

Using mortgage debt at 6-7% on a refinance to pay off higher rate debt such as a credit card at 15-25% is a savings!

Going to guess the $797 is rent only, with tenant paying utilities.

Owners pay not to deal with problems.

This would pay us back less than we were owed but still enough to come out whole.We all tried to negotiate a short payoff with the second-position lender, who foolishly demanded payment in full.