Other things to consider - do you need cash flow, do you need cash out of the sale (which will be taxable, but could do a partial 1031 exchange), what will you buy as replacement property on the other side, do you want to manage real estate on the other side or have totally passive real estate...If you’re considering an exchange, want to be hands off, and are an Accredited investor, you could exchange to a DST (Delaware Statutory Trust).

We have cycled through a few potential replacements but can't get the dependability and proactivity that we need. 

Sounds like a good option Eric.

@Sunil Kapoor Sounds very high.

Sounds like you have some great RE experience.

They both sound like they know what they are doing. 

@Jim K. finding a replacement renter would of course be subject to the landlord screening.  

@Ian Godfrey sound advice!

Buckeye sounds really interesting especially since it looks like it’s backed by one of Bill Gate’s investment companies .http://www.businessinsider.com/bill-gates-smart-city-pros-cons-arizona-urban-planners-2017-11Looks like they bought the land around $7500 acre .It makes sense more people are moving out of CA to Arizona and other lower cost lower taxed states .

But it's a not replaceable area and city with so much high income professionals live there.