Energy (propane/electric) costs annually are atleast double to triple for an indoor heated pool, unless it is a small fiberglass insert which guests detest as they are just a little larger than a hot tub. 

However just about everything he told you he is either double dipping on or is irrelevant. 1.

interest rates have more than doubled since the end of 2021.  

. - The cost of two kids in child care exceeds rent payments, by at least 25% nationwide and is more than double that in 9 states (CCAA).- Book Recommendation: Long Distance Real Estate Investing.

Just get really good at hitting singles and doubles". 

It will cost me and extra $200 a month for the added flood insurance but I was told it will likely double or triple in price once it is no longer a primary residence.

At least double if all detached.  

If you have it in writing that they left, double check all utilities are paid for and transfer them to your name. 

Honestly if you are never planning on moving back to the house (or the area), you are not going to cash flow especially after you add in insurance, repairs and maintenance (assuming property taxes are part of your mortgage).You have a friend willing to buy it off market-double check fair market value and sell it to them.

When we did renos in Michigan, we did one of the inside the wall rewires with a good electrician and it took a month longer than he quoted and double the cost.