All are local except for one is a national brand auto supply store, using this for a warehouse. 

The biggest pro, is typically you will have a higher rental rate, if your home is already furnished and you have no place or desire to store it, it might be worth it. 

I inherited a partnership in a 22 unit commercial building with 8 restaurants, a grocery store, a couple of personal care services, and various other businesses.

You can't thrift-store-buy your way to profitability.

Phoenix contains a rare combination of elements that have created an outstanding market for distressed property investments, including the following:Cost Savings: Distressed properties are sold below their market value and enable investors to take hold of properties at a trifle compared to traditionally listed properties.Strong Market Fundamentals: Being among the fastest-growing cities in the country, Phoenix ensures a high demand in housing and rentals, hence good potential for resale or income from rentals.Value Creation Opportunities: Most distressed properties need renovations; thus, such situations present opportunities for investors to increase equity by adding value.Population and Economic Growth: Phoenix remains among those cities in the country which are attracting more and more residents and business; therefore, this presents good, long-term appreciation possibilities of property appreciation and income creation.Challenges to ConsiderWhile the rewards can be great, distressed property investment is not without its challenges.

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?

Meaning you'll have to store their property.

As an investor trying to sell your flips, choosing design elements that the majority of homebuyers will love is important.

I'd look for a good brand and spend some time looking at reviews from a big box store.