We have a relator out of Redding, CA whom we work with each time we look into real estate buys.

My question is this - does Johnson City receive enough visitation to justify a successful STR?

Today this would be possible in high priced markets were your average loans are more in the 500k range so only 10 a month.. like CA  NJ  Denver and ski areas . 

Would appreciate any other good options, especially those with focus on California markets. 

what you're proposing, while possible, is incredibly difficult and highly risky, and i don't know how you would do it completely remotely with no plans to visit or set up a team.i think i've said this in other posts, but there is tremendous demand for inventory right now among both retail buyers and investors. 

My listing is at Fremont, CA. 

There’s actually quite a few investors from California making purchases over here. 

Perry SkollLong Beach, CA

Where's in CA?

I would also join every FB group for investors, from local to California, and post the package there as well.