Im trying to set up a ip addressing schema for this network what should i do first?

1. Configure end routers as DHCP server and assign IP addresses to end devices as well as routers.

2. Configure switching part maybe devices are a member of different VLANs or same.

3. Configure POE as some IP phones.

4. Decide a routing protocol to run in between the routers.

5. Check Reachability.