Cannot promote Windows Server 2012 R2 to Domain Controller at a new site. "The wizard cannot gain access to the list of domains in the forest."
Solution 1:
You may have better luck promoting to DC from media, as described in this MS TechNet article Basically, you will move all necessary data in one go with a packed file, instead of establishing all those connections over your high latency connections. After promotion there will be need of regular replication, which will be retried continuously and, hopefully, some will succeed.
On source DC:
ntdsutil
activate instance ntds
ifm
create sysvol full c:\path-to.file
Copy file to new server and use it with Install from Media option in promotion wizard.