What are my options with a experian score of 630 , self employed brining in $4k cash

[Jimmy Rojas]

Hey guys, im located in Phx,az and would like to invest on my first property here, I would like to know what are my options, I am self employed and bring in about $4k a month (mostly cash )no paper work to trace my earnings (im in the car selling business)  , experian score 630  1 delinquent acct but it was paid off many years ago, Ideally i would like to put down $10k to $15k tops, what interest rate do you all think im looking at.