I'm not sure it's all worth it or not, I'll have to do some research (maybe find that podcast) and maybe this post will pick up steam in the meantime. 

If determined asbestos free I would use a steamer to steam the popcorn (if it hasn't been painted) and then scrap with a drywall knife.  

You can use some of the extra revenue to steam clean carpets in the off season.In addition to VRBO/HA and AIrbnb I advertise on Craigslist (Facebook Market is also hot) I drive them to my HA listing but also take direct listings with a rental agreement and photo ID.During the peak season my cleaning lady is extremely busy cleaning our Lake house as soon as people checkout so that it is ready that afternoon for another arrival.Know your market and make sure you are taking advantage of events that you might not have of though about if you hadn't done your research.Discounts in the off season also increase your days rented and reviews which puts you higher in the search position for when you are getting top dollar.

subfloor- steam cleaning, lemon and baking soda.

a dent in wood can sometimes be lifted by steam. 

Appreciation rates are starting to pick up steam again in this area. 

My wife and I are ready more now than ever to go full steam ahead in getting me out of my Restaurant Management Job so we can work for ourselves and eventually create a lifestyle where our retirement is taken care of, and we can spend more time with our 2 kids and travel.

So, I'm starting with them tomorrowOnce that is achieved it is full steam ahead to buy a property in the next 60 days!

This creates a walled in effect so no steam gets out above the shower curtain.

@Dan Clarkson, how far along are you with finding a local (to your anticipated investment/s) team of Contractor/s, Property Manager, and "deal-finder/s"?