One point - you have a physical stack of core switches (425’s). Are you looking at stacking your edge switches and removing the individual uplinks from each switch to the core?
Some will be for this some will be against. Some don’t like having larger stacks.
Could you dual connect each edge switch back to the core across both core switches to give you 20Gbs etherchannel per switch? You have the capacity on your core to do so.
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.