Everything here is my opinion. I do not speak for your employer.
"When using these values, carefully consider the advice in Sections 1 and 1.1 of [RFC3692]. It is not appropriate to simply select one of these values and hard code it into a system." – RFC4727
Aw. Darn it, IETF. Stop reading my mind.
Try Tailscale: mesh networking, centralized administration, WireGuard.