I am going to get hit with capital gains and state taxes(Idaho 5.8%)..closing on cabin on the 18th of Nov.

Even if it does appreciate, the only way you realize those gains is if you sell.  

How much and what would I do with the gain on sale, and how does that help or hurt my strategy? 

It takes a lot of work to find a tenant, your commision gained from the income should only be for the services rendered while the tenant is in the home ( in my opinion ).Some additional fees I can think off, are maintenances fees, for larger projects that require a lot of management and research.

only the appreciation gained during the leasing period?

Even though you feel you don't reach the full cash flow potential, you gain on making the lives of those families more comfortable.

In addition to this commercial unit, I currently manage a portfolio of five residential and commercial units, which has allowed me to gain hands-on experience in property management.My approach focuses on maximizing property value through strategic enhancements, ensuring tenant satisfaction, and implementing efficient management practices.

I use it quite often as well as other cryptocurrencies and they're gaining popularity.

This should transfer the weight of the room to the new support as the seasons change.  

It has worked out well for me and I like not having to pay taxes on the gains which helps me increase the amount I'm able to lend next time if needed.