CJ,
The end game is whatever you decide, as you have multiple options in that you can hold long term and even pass it on to your heirs giving them a step up in cost basis (huge tax advantage & strategy) Or you can hold until you pull out all your initial investment (hopefully by that time you have made some improvements to the building and got some nice appreciation and equity) and than sell giving you a nice windfall of capital to redeploy elsewhere or maybe invest in something a bit more passive if you are older and want truly passive income. OR you can hold it until you have paid it off in full, and than you have even more options as you can sell and owner finance (this means you become the bank) or you can just sell conventionally and cash out for a LARGE lump some of cash!
I have not decided what I want to do but I know that when it comes I have many options with my portfolio of single family, multi family and condos. I am still young (45) but have a nice portfolio of properties producing great cash flow and I am still at my day job making decent W-2 income so for now the idea is to accumulate and build wealth. 10 to 15 years from now I will evaluate my situation, my wants, and where the market is and decide what is best, but the best part is there are many exit strategies.
Hope this helped and gave you some ideas
regards,
Chris