Out of the 50 addresses zero will probably be interested in selling so it's a numbers game before you find the one. 

I would do more due diligence and find a group that fits what you are looking for.

I started my career as a commercial banker a long time ago, but have been an independent mortgage broker for nearly a decade.

Find a good insurance broker in your area that can shop the various policies out there.

. $40k will not get you a non owner occupied San Diego property unless you find some unlikely alternate financing.

Now, you need to figure out how to find deals and pay for them.

@Brody TrottStarting a real estate career as a firefighter offers lending advantages and flexibility.

Having developed a majority of my career in CA the regulations and red tape for construction and development are intense. 

"Master Group", "Winners Circle", or whatever - where they will promise to hold your hand, find you deals, find you money, find you whatever you need - all for the low low price of (in my case) $45,000 for a 2 year membership.  

Inexperienced investors rush to buy these properties, only to find themselves with a heap of trouble.