Do I move forward with them filling out the application before I've even closed on the property, along with paying for the credit/criminal/background check and sending them the Estoppel Certificate?

Credit score is great, no criminal background seen, no evictions, not a registered sex offender.  

You need to be researching civil not criminal codes.

Of course, we also need to complete background checks on each tenant, including criminal, credit, and eviction checks, and a solid lease agreement too.

For example, I mention that every adult must pay a $30 application fee, pass my credit/criminal background, make a combined income of 3x the rent, and whether or not the property accepts pets.

no one has mentioned it but Real estate agents can be targets of criminals and sexual assault.

He uprooted his entire family, kids and all, to avoid prosecution in the states and took his millions with him.

On top of that, if you say something wrong, you can be liable for civil damages on top of criminal charges.I’ve had one signing with an investor, who is also a full time accountant with a government contractor,  and he explained his financing to me because it was different.

It's not civil...it's criminal.

FAILURE TO ADHERE TO THIS REHABILITATION PLAN COULD RESULT IN PROSECUTION OR DEMOLITION."