What is the most painless way to transfer my peer-to-peer network to a domain one?

Question

System administration

Initial data: Windows servers, manually configured ip addresses, a chaotically laid network and other delights of a state institution.
In general, the algorithm is clear: first the DNS server, then AD, DHCP, etc.
It's a little unclear to me what to do with ip addresses. There are seven subnets, and people did not understand the meaning of the existence of subnet masks, the network 192.168.0.0/24 is full and the assignment of addresses for thin clients continued from 192.168.10.0/24. The fact that my experience of raising domain networks is limited to virtualbox only hinders me, all my career I have been engaged only in supporting the existing one.
If anyone can share their experience with this, that would be great.

Answer 1

1. Raise DHCP by prescribing the issuance of existing IPs with MAC binding.
2. Change settings on clients by switching from static addresses to DHCP.
3. Develop a new addressing plan, prepare new DHCP and DNS configs.
4. During non-working hours, reconfigure the DHCP server to issue IP according to a new plan, change the DNS settings.
5. Replace addresses where they should be static (servers, gateways, printers).
6. If necessary, restart the clients or re-request IP on them.

Answer 2

IP addressing has nothing to do with ActiveDirectory.
The biggest pitfall is user computers. More precisely - a user profile. When frontal adding a workstation to a domain, you will have to re-do all the settings (the entire user profile) on each workstation. There are no more pitfalls.

Answer 3

I would recommend abandoning Windows due to the high cost and binding to hardware, and due to slowness, and use the following bundle:
Mikrotik + Synology
The first is for routing, VPN and other networking, the second is for AD, profile storage and file storage. It, including, answering to "painlessly".
More expensive Synologies now allow you to raise virtual machines on your own, not to mention dozens of other services from chat and cloud to CRM.