Buying a duplex with tenants

[Matt Stefanski]

Hey guys I've been on this site for quite awhile and I'm finally getting around to purchasing my first property! It's a 3 lower 2 upper duplex in South Milwaukee, Wisconsin. The previous owner was using the upstairs as an air bnb but the lower unit he has tenants on a mtm lease. I'm just wondering is there anything I should ask from the owner besides

-The current lease agreement.

-The move in / check in sheet

-Tenant info

-Security deposit

-Prorated rent

Just wanna make sure I cover my bases and dont have any suprises at closing. also if anyone is looking to link up in Milwaukee and discuss real estate I'm really trying to expand my social circle and would love to meet up!

Thanks for any and all replies and help!