At that time bitcoin was still in the $200-$500 range, and he had over a $1M in bitcoins on them.

Maybe I'll make a policy to schedule all our leases to end in a spring/summer month range. 

We typically pay somewhere in the range of $3500 for a new, basic furnance, including install, if there are no other modifications to the system required.  

And do you have a certain area of Memphis/KY that you're interested in and/or a price range of properties?

you may want to consider investing then with some of the known top shelf syndicators if you want cash flow real estate. trying to buy low to mid range rentals probably not your bag.. it will be what it is.. inconsistent and for someone like you that is pretty detailed probably not an appropriate investment vehicle there is no real upside.

Looking for success stories or other experiences , positive or negative, range of costs, etc.

You can find decent SFHs in the $150k-$180k range that can cash flow if you buy right.The challenges?

For instance if I’m looking at potential capital expenditures over the next 5 years and the range of the cost is between $25k and $75k, I would use $75k in my projections.

Are you looking for more SFR in the same price range in your local market?

What is your price range and what do you consider to be a "medium" rehab project, rehab costs = to 25%-50% of the purchase price?