Start a local "lose weight" club for a monthly fee. 

In general the holding cost I estimate are utilities, loan payments, taxes, and up keep costs for example.

But the amount we are learning on what it takes to own, fix, upkeep, and serve travelers is well worth it.

Go put one together.Without one of those no one can tell you what you should do correctly and in any case you have no basis for valuing one persons advice vs someone else.If you did have an IPS, it would most likely indicate that the recent run up in real estate prices means your RE portion of your investment portfolio is over weighted. 

It was difficult to install and has been problematic as it bends with the weight of our two overweight tenants who like to take showers together.

Like your weight is only one metric of fitness. 

What does your lease state about landscaping and yard upkeep requirements. 

I just think the higher taxes, insurance, cost of house upkeep will make the guy who locked in at 3.5% more amenable to sell at 5% than having to come sub 4%.

To calculate your land value, take into consideration the average price per square foot or acre of the comps and apply that to your land.Steps to apply comps to your property:1) Compile multiple comps: Find a real estate agent to help you put together a list of comparable properties.2) Make adjustments: Analyze each comp carefully to determine whether it has advantages or disadvantages when compared to your property and make adjustments to the value upwards or downwards as necessary.3) Determine the use of weighted average vs average: Depending on how close the comps are to your specific property; you may consider utilizing the weighted average method to place a greater weight on those properties that more closely resemble yours.Using comps to value your land can add a component of complexity and subjectivity.

If you have the ability and money. no shelves without some good support. self hanging are only for looks and light weight staging. good luck