Removed popcorn ceilingNew furnaceNew energy-efficient windowsLuxury vinal flooring throughoutBathroom remodel in masterBathroom updates for the secondary and half bathsKitchen remodelNew paint throughoutFenced in backyardStair remodelSustainable landscaping updates What was the outcome?

Also, what clauses, other than the standard ones can I add in the lease agreement to ensure the tenant does not damage the property?

RE markets are efficient. 

Lenders can be picky, so you want to ensure you are shopping in a market where the deal will close.

I'm sure you can ensure the work is professionally done as well. 

Do what you think is the most efficient use of your funds.

You should ensure before you buy that the property you purchase is going to cash flow as a rental.

You'll need MLS access if you want to ensure your ARV is accurate. 

None of this works unless you can ensure you have high enough profits to service the debt and sufficient liquidity to manage unforeseen events. 

(High Cash Value Life Insurance works too, but takes time to become efficient).