Does anyone know a property manager that supports small self-storage rentals in addition to residential rentals?

These are professionals with additional training and a stricter code of ethics.

I've opened two additional LLC's with them since I last posted here.

Additionally, since my parents are nearing the retirement age, I'd like to prioritize low-debt, high-cashflow deals.

THEY ARE NOT LIMITED TO ONE PROPERTY.So, they can 1031 to 2 or more additional properties OR 1031 into a rental property plus a DST so that all the profits are used up in the exchange. 

However, the concept of a virtual office is a very useful tool that provides a professional fiscal and commercial address, as well as additional services such as mail handling, meeting rooms, and phone assistance.

Best to call city hall for the town you are buying in to see what if any rent control rules are in place. see link below if you require additional information and call the Jersey City Landlord Tenant relations office. https://www.jerseycitynj.gov/cityhall/HousingAndDevelopment/...Jersey City CPI chart on recommended rent increases: https://cdnsm5-hosted.civiclive.com/UserFiles/Servers/Server...The state with the highest eviction rate in the country right now is South Carolina. 

Might be an additional cost there.If units are updated, capex items look good, leases and tenants look solid, and there are no other regular expenses besides the 5200 in insurance/property taxes then I like this deal.  

You want to make this clear that additional items need to be purchased by the guests so they are aware.

Man, just in 3 years if you have the tenant leave every time, even without the negative cashflow, that alone can cost you an additional 20 or 30k.