If you can offer a nice unit that is updated for slightly lower than market value, it is going to keep your vacancy rate at a near 2% per year. 

@Kwanza P.Here you can learn more about non-recourse loans:https://www.biggerpockets.com/member-blogs/2810/46115-real-e...Here is a list of lenders offering non-recourse financing to Solo 401k:https://www.biggerpockets.com/member-blogs/2810/50272-list-o...You protect your property by purchasing insurance. 

If it's a verbal tenancy, you have to show a practice of collecting rent that the tenant is no longer abiding by (or perhaps tenant shows up, and honestly states they were obligated to pay rent and haven't done so).When the eviction case is submitted, you give the tenants names, e-mail, phone, address.

Should I have one website advertising both and have business cards list that I offer buy/sell realestate services and PM services.

If you adhere strictly to the laws, you will be limited in the services you can offer to your relative compared to what they would get if they listed their property with a licensed agent, and they will get less money for their property working with you than if they hired an agent.

Private insurers sometimes offer lower rates.5.

I love the flexibility they offer for traveling professionals, military families, or folks in between moves.My main questions:Have you noticed increased demand for midterm rentals in this area, particularly from military personnel at nearby bases or healthcare workers at local hospitals?

It sounds good in theory, but in practice is highly unlikely.  

Constructing two 4,000-square-foot duplexes on separate parcels in San Ysidro would cost roughly $2.96 million, with a market value of $6.31 million, offering a 113% ROI.

Of course there was offers to register for more courses and mentoring  and various up sells, but you will find that at any seminar.