Plus, it's on a corner and REI Nation did another amazing job with the rehab.

Without the tenant explicitly stating (preferably in writing) you can trash whatever is left, you likely have a requirement to store items left behind. 

The problem with apps running comps is that they can't see inside the homes (or smell them lol), or evaluate the exact location, or understand the local market on an intimate level to know what's next door or around the corner and predict the market value and ARV accurately like only an experienced local Realtor, appraiser or expert investor can.

The person leaving the trailer there is just to store it there.

A $10M project repurposing a former grocery store into a dynamic dining and social hub in the heart of FUSE.🚀 Big things are happening in Gastonia—what are your thoughts on these developments?

Mileage comes into account not just going to the property but also going to the bank or the store.

Again, the BiggerPockets store has some books on this topic, or you can learn about it by watching podcasts, reading blogs, and interacting on the forum.

Manage their properties Provide welcome gifts/ goodie bags for their guests before check in Hauling extra supplies/ misc items to return to stores or other properties--Any other ideas that I can pitch to make myself more marketable?

In Franklinton there are plenty of large projects going on that will bring massive growth to the west side of Columbus, such as the Peninsula Development, which is a multiphase project that will erect a 24 story apartment complex featuring a grocery store, a multi use office space building, and a new hotel featuring a two-story venue. 

We get our cabinets through.the box stores.