How about finding some raw land, spend as little as possible clearing it and then set up some portable solar, some battery storage and turn it into a RV park. 

Aloha,A 10 year battery is absolutely a unicorn...I haven't had one last more than 4 or 5!

I can also adjust how often the lock connects to wifi and receives new information (Tradeoff quick response to remote adjustment for battery life of my lock).

I only discuss things once with the tenant and if there are any further repeated issues I go straight to the section 8 advocate for that tenant.Make sure you have clearly stated rules in to your lease - tenant changes smoke alarms batteries, no pulling down smoke detectors, dogs on leash, no unauthorized overnight stays more that three days, where to park, etc...Finally, any rules for the section 8 tenant must be enforced for all tenants.

There is much more than the house that will be required to make this work, meaning more costs than just the price of the module that the factory sends you. 

Although I do think property tax's being what they are in Texas is modulate the values somewhat?? 

Just stay on top of the battery level and you’ll be set.

The Elite version of the Ring Doorbell can be hardwired and won't rely on wifi or batteries.

In-house costs for repairs & cleaning are billed at $25/hour plus materials & supplies.In signing this document I (we) agree upon and accept the above charges upon move-out.Date Executed: _______________ Date Executed: ________________ Tenant Signature(s): Landlord or Property Manager Signature: ____________________________ ______________________________________________________________ Plumbing Replace kitchen faucet $150.00 Replace bathroom faucet $105.00 Replace faucet handle $20.00 Replace faucet aerator $10.50 Replace shower head $27.00 Replace toilet $175.00 Replace toilet seat $25.00 Locks Replace key (door or mailbox) $10.00 Replace cylindrical door lock $35.00 Replace deadbolt lock $25.00 Windows and Window Coverings Replace window pane (single) $75.00 Replace window pane (double) $125.00 Replace mini blind $20.00 Rescreen window screen $25.00 Replace window screen and frame $50.00 Miscellaneous Replace refrigerator shelf $25.00 Replace stove/oven knob $20.00 Replace plastic countertop $275.00 Replace mirror $45.00 Replace medicine cabinet $75.00 Replace towel bar $25.00 Replace shower curtain rod $25.00 Replace shower curtain & rings $13.00 Replace shower/tub enclosure $350.00 Replace thermostat $80.00 Replace fire extinguisher $30.00 Remove junk and debris (per area) $35.00 Replace smoke detector $15.00 Replace combo detector/alarm $40.00 Replace alarm battery (per battery) $3.00 Replace drop ceiling tile $10.00 Replace wireless doorbell $35.00 Replace portable window screen $10.00 Rev. 2/15/2019

The little stuff.First Aid kit, Carbon Monoxide sensor.Keep extra batteries locked up for remotes, smoke detectors etc.You or a friend should stay there for a weekend and you'll find out real fast what is missing.