That said, expect a 24-48-hour response time to requests/negotiations. 

You want to put everything in writing and be very clear about expectations and responsibilities.You also need to verify the remaining tenant can afford the rent.

Even then, you can expect they won't be able to maintain the home to the same level you did while living in it.

(Land and construction cost, expected sale price, etc.)My last development in Chicago looked like this:Land = $300kConstruction Cost $650kHolding Cost/Closing Cost/etc. $50kProfit roughly $100kThat project was in Bucktown on the nw side of Chicago.

Right now, you can Invest your $150,000 in T-bills until you have enough to make a move.

To be expected.

I was going to say I would include at least one exterior photo so the guest has all expectations set forth for them.

Good question here, generally speaking one year is the expected timeframe before you would be able to purchase a new primary residence (also referring to how long you would generally be expected to reside there). 

Let your tennant in the “disuputed” unit know what’s happening and discuss temporary solutions in case this drags on longer than expected.

What's the life expectancy of the roof, paint, furnaces, water heaters, etc.?