Speak with a RE attorney and ensure they draft a detailed operating agreement for you specifying each person's roles and responsibilities and detailing the "what ifs" scenarios. 

The best way to ensure that you'll be ready in a crash is to have actual cash on hand.

Are there any subsidies available for efficient energy options that you could avail of.Another related way to increase NOI whilst gaining the marketing advantage of being environmentally friendly would be to offer fee based electrical vehicle charging stations. 

You'll also want to ensure you have a good property manager to look after the upkeep of the property if you are not there to notice anything deteriorating or which may need attention.This article goes into a lot of the considerations about whether to form an LLC or not: https://www.mmpph.com/wp-content/uploads/2019/04/May-2019-newsletter.pdfCreating an LLC in California would cost you a minimum tax of $800 every year.

I agree with Timothy, make sure you have sizeable reserves to ensure your investment succeeds.

My fear is that the current tenants will move out and this tenant will remain in the unit and want to add a roommate himself, so I need to ensure that he has adequate income.

Instead of a $1,500 deposit up front, Tenant can opt to pay a monthly fee of $10 and Obligo will ensure protection of up to $1,500 for me as the Landlord.

Amortization is longest allowed so we can get comfortable as we upgrade and cycle tenants to build efficiency.

It would be on a very small scale to ensure that quality can be maintained.

It's simply a better, more efficient way to pay down a mortgage and make sure your money is always working for you.