As @BrandonS states you could knock these out in no time.
Review the Config from your current core. Note down vlan port assignments and configure like for like on your new core.
Same goes for your L3 VLANs, IP-helpers and routing.
Make sure your L3 interface for your switch management resides on your upstream firewall.
Darren OConnor | doconnor@resalire.co.uk
https://www.linkedin.com/in/darrenoconnor/
I'm not an employee of Cisco/Meraki. My posts are based on Meraki best practice and what has worked for me in the field.