But constant churn from the tenants in the high yield areas will definitely disrupt your life (and so will a $6K make-ready).

Increasing the thickness of the drywall means there are at least two areas where the density disrupts the waves a bit more than normal. quite rock qorks because the material makes it harder for the wave to transfer not simply because it is thicker. 

She needs to make the unit available for showings and you will do your best to cluster the showings to minimize the disruption. 

Also, the normal summer patterns are disrupted anyway- people wanting to get settled somewhere before school starts- well, what does that even look like this year? 

If you are relying on a cash out refinance as your exit strategy than you need to talk to your lending source to make sure you can get your capital out without disrupting your real estate acquisition schedule.