You can either buy lists or I use Prop Stream to pull data and get the addresses skip traced (a cheaper way to do it).

My personal suggestion is in line with @John Swann, figure out how much is necessary in repairs and what the income stream of the asset is after taking out all monthly expenses. 

I think prop stream is amazing but sometimes misleading....I wholesale, am an agent and invest myself in 5 different states.

We’d love to see it. my goal would be a nice size ranch Property with stocked lake ( trout not bass) and a Trout stream with mixed Oak and Conifer . 

In the city with a larger population, you'll always have a stream of people interested.

and income streams...I'm also looking into Hillcrest or North Park...

My aim is to build up a portflio of buy and hold investments to generate a passive income stream.

Let me put this out there for all you new bloods to read.Here are your requirements to be a good wholesaler:1) You know the ins and outs of flipping a house.2) You are a beast when it comes to negotiating3) You are an absolute expert on finding the ARV4) You know what it costs to do any repairs5) You know how long it takes to do repairs6) You have god-like marketing powers7) You know contracts and addendums and all that stuff like the back of your hand8) You know your way around creative financing9) You know what a good ROI is on any rental propertyHow are you possibly going to construct an amazing deal if you are not an expert on all these items?

How many streams of income do you have? 

I am in a completely unrelated field (health care) but many of us have second jobs for additional income, including myself, so RE is just a third stream of income and everyone understands (or probably doesn't care).