I think Installments sound strange and like a lot of problems waiting to happen, not to mention the risk of not being able to sell and then being out the carry costs, etc. 

This would significantly affect the resale value of the property if you ever went to sell or ever wanted to refinance.

Most important of all is that you are in control of your investment in area that you like with better school, safer area, etc.

So I came to peace with selling.  

If it isn't, sell and hopefully pocket some profits to invest in something else.If it is for you, you could repeat the process and buy another owner-occupant property and rent our your previous.

I try to buy with seller financing now, and I renovate with Home Depot line and our own cash, and then refinance or sell later. 

Obviously there will be a fee a pay for the services of course but i’m noticing most CPA are trying to sell me a packaged deal meant for REI who have larger portfolios with complex tax planning/strategy needed and I haven't found someone who fits my need.  

Will your identified markets be an easy or difficult area to sell once it’s time?

They do sell exhaust fans that turn on automatically upon detecting moisture.

If there's no way to stabilize the asset, I would likely sell and 1031.