The basics are:Price it fairly,Offer buyer agents a reasonable commission, andGet pro photos.If you do #2 and #3 right and you are not getting any action, then you just need to adjust the price.

If they need you to pay interest for IRS reporting purposes, then you can just do something like agree to pay all the interest on the back-end (at the time of sale), and then adjust equity ownership to reflect the interest payments and even out the total profit split between the two parties.They get their workaround, and you get the 50/50 split you were promised. 

I'd suggest that you budget VERY high for this work and adjust your bid accordingly.  

However, with the new tax laws your adjusted basis of assets is one of the limitations for the QBI deductions so now there are cases where, if qualifying, capitalizing but using bonus on items makes more sense so it's still listed as depreciation- not just an expense.

You should consider this when renewing a lease and adjust the rent $s accordingly.

It should have been removed and the terms adjusted as necessary.  

You have to adjust your methods to it or just pass on every deal.

If you also factor in that most people judge their own capabilities vastly beyond their actual performance, then the better risk-adjusted choice would still be to fund your retirement account. 

-When I sell the property, would I be paying a tax on the profit of the sale (sale price less adjusted basis) AND a LLC fee based on the sale price?

I will adjust those.