Also, due to increased liability exposure property insurance premiums is adversely impacted causing fewer and fewer building owners to seek out ATM tenants.

Seller should record their lien against the property, you both should have an attorney review to make sure all interests are property documented and protected, and i think everyone is in a good place. as far as evicting tenants... this is up to what you and the seller can negotiate. i would still be putting on the same contingencies - appraisal, inspection... know what you're buying. don't get blinded by the seller-finance piece. 

In our area, its fairly "normal" for showings to happen after accepted offer to minimize disruption to tenants. 

Tenant(s) name(s) and contact information, start/end of lease, rent rate, pets, kids, etc.Create a section for tracking rent charges and payments.

•If only a few, it may take longer to find a tenant.

@David YoungRecommend you first figure out the property Class you want to invest in, THEN figure out the corresponding location to invest in.Property Class will typically dictate the Class of tenant you get, which greatly IMPACTS rental income stability and property maintenance/damage by tenants.If you apply Class A assumptions to a Class B or C purchase, your expectations won’t be met and it may be a financial disaster.If you buy/renovate a property in Class D area to Class A standards, what quality of tenant will you get?

Included was 2 bedroom, 1 bath house, 2 bedroom mobile home and a rental lot with a tenant owned mobile home.

Owners and tenants.

Charge the tenants a higher rent rate and include utilities with their rent.

It could just be bad luck or improper tenant screening.