I usually text 10-12k property owners with 1-3 possible mobile phone numbers per month.

We invest in top-flight self-storage and mobile home park syndicators and we do months of research before sending them a dollar. 

I live in Phx,Az , where should i apply for a mortgage loan first at my local bank (wells fargo) or use a broker, a lot of people here tell me to start with my bank as they have all my info, if i get pre approved anywhere i wouldnt be committed/obligated to go along with the deal right ?

Consider working with a lender to get pre-approved for financing, as that will give you an idea of your buying power.

CMHA also approved a substantial increase in the section 8 rents.  

Every adult residing in your rentals should be screened and approved by you.Criminal history is not an automatic denial, but you should definitely consider risk.

Your property might be legitimately worth $1,500 and the tenant qualifies for $500 in assistance, but can only afford to pay another $500 for a total of $1,000, they won't approve $1,500.Unfortunately, you can usually only find both of these out when you have an application and lease signed from a prospective tenant and submit it to the local housing authority.

We also have a strict policy that anyone 18 or older living on the premises must be properly screened and approved. 

I currently sit at $258K to go on the mortgage and did this through a small bank, which I believe approved me for such good financing at the time.

We live in the greater Seattle area, WA, and just got pre-approved for a loan.