ADUs typically add value to a property, but it might not be at the same $/sq ft as the main house.

Have you considered all the tax implications of selling?

Trusting what the franchise tells you is foolish.I can tell you this: there are companies selling leads to real estate agents all the time.

Get the house hack under contract and closed first. 

A couple strategies that could make sense for a younger person without experience could be a live-in flip or a house hack.

You can still buy houses in small farm towns in MN for $25k.

.$70k out of my pocket cash and sell the house when it is done for $360k to $400Kclosing cost $40k so 360 - 40 = 320 - 270 = 50K profit or 400k - 40k = 360k - 270k = 90k profitthe $360k is conservative for sale price chino hill ca.at least that was what i had bouncing in my head

And IMHO, the prices are dropping big time (on avg. 10K/month...houses that were above 300K a year ago are not selling at 250K now) and the available rentals saturation is worse than I seen during summer season (with rents dropping from 1$-1.08/sqft to 0.8$/sqft and very little contacts and applications...just go in Zillow and look how many rentals are on the market now in Kyle, New Braunfels or Converse). 

Why is the seller selling?

@Ryan Duphorn  a  5 /2  and 1920 square feet IMHO isn't a good health care traveler accommodation unless you are in a area with a shortage of housing.