Your criteria seem a bit strict for Section 8 applicants.

Lenders will want to know if the property is generating income and if it qualifies for a DSCR loan or traditional financing.

The fee to submit an application is $600.00.

The owner is open to seller finance for us.

Here's a detailed guide on how to screen applicants: Application Screening Guide 

I was looking for some advice (viable target areas in Cleveland or Ohio in general, financing options and credible PM/realtor contacts) from the experts here though especially if you are in a similar boat as mine (reside in Canada/Ontario area and invest in US). 

I am a realtor and wholesaler, and I get some buyers looking for owner financing, some sellers need/prefer getting cashed out and there are some lenders I work with who can provide the financing however they run out of funds sometimes.

Quote from @Guillermo Perez: Does anyone have experience with seller finance?

This criteria happens to pretty much exclude all S8 applicants. 

I'm using a property management software (TurboTenant) for rental applications and screening reports, and they charge each prospective tenant $45 for this service.However, the Wisconsin State Legislature states that the landlord can only charge the actual cost of a credit report (up to $25).