I also wish I had started thinking about REI at your age.

You might also want to consult local property managers or rental market reports for a more accurate picture.When it comes to estimating CapEx during preliminary analysis, without visiting the property, you can use a general rule based on the property’s age and condition.

NO debt NO debt NO debt on rentals is the way to go as you mature in age as an investors.

@Darrell Overly  there are certainly enough mobile homes in the area around phoenix (East Mesa/Apache juction) but your issue may be the age of the homes and any limitations the park has on renting.   

I'm currently helping my aging parents, and I need to be spending more time taking care of them.

So your number of 715k may not be too far off depending on the square footage and also the age of the cabin.For anybody to suggest otherwise without knowing more information on your specific cabin isn't giving you the best advice to be honest. 

I built my first modern 7 years ago and like you agree that some (not all) moderns will age out.

We plan to rebuild, but our neighbors are aging and do not wish to go through a rebuild.  

In Illinois, the minimum age to officially become an unlicensed assistant is 18.

Are there any investors between the ages of 18 and 25 in this group?