I would say - steady progress with so far no setbacks.
I really do believe once the wheeling and dealing is done the point to start will be very short maybe 90 days or so as the setup accounting and perhaps build a launcher.
I can see 90 days to 6 months after the deal is signed. The tortoise beat the hare afterall, I'd rather wait a bit longer to ensure as error-free a relaunch as possible.
Create and test the launcher
Create and test the accounting system, plus decide if it is the old F2P/VIP hybrid or not.
Set subscription price
Activate servers for beta testing to ensure things are ready
Provide a download of the game for those that uninstalled and an update for those that did not uninstall (I like using Icon) that points the game to the new servers.
Activate website and forums
Set launch date that can be met barring sudden epic problems
Rewrite and revise the old Terms of Service as needed to accommodate new ownership and any legal changes needed.
Adjust any of the old CoH rules that need updating
Hire GM's to police the game and help with stuck characters and teams and swat down exploiters and troublemakers.
Prepare incentives and special offers (people will ask/expect some. I don't but others will)