Guidex not sure how you will go with the credit check domain. I own several of the best names in that industry and have had no luck getting a bite to sell leads when I had websites on them. Australia only has 3 credit check agencies and your not allowed to sell credit checks as I tried to get an account with them, it's against their terms.
I did have several at number 1 on G for about 2 years and clicks were amazing cpc wise. I was earning for creditcheck.com.au alone about $60,000 a year in Google adsense . Now I don't have adsense as G banned me, I've parked them. I did sell creditreport.com.au for $27,000 a couple of years ago.
So your only way to monitize is adsense.
Don