Education via trail & error is easily the #1 worst way to go about anything today UNLESS your an explorer, inventor, revolutionizing and still all of those have a whole lot of training and education backing them. 

Typically these switches are in the vicinity of the furnace and not easily mistakenly switched off.  

I also happen to know that Grocapitus has three exits coming up in the first half of 2022, and all of these are expected to beat the leader in this table below (Park Canyon - 50% AAR) easily.

You could easily niche into that via even just the legal realm and would probably never have to step outside of it.

In 2021 we bought several 4plexes that cashflowed easily at 25% down.  

In my Chart of Accounts we list each account separately and then each one is easily listed on my P&L.

Sellers realize that offering the BAC means that their property will be more easily marketable to the highest number of buyers and have the best chance of fetching the highest price, that's why they choose to offer BAC. 

You could easily get 75-80% LTC on the cabin build meaning you'd need about $200,000-$250,000 CASH, to complete the project.Take 200k out of the FL house, build, rent, refi & payoff the FL property again would be my best bet about going about it.

I could very easily rent the property again but my plan was to sell it and use that cash for the next investment.  

You will need to factor in rehab costs, which could easily eat up another $50-75k depending on the condition.