I would leave it until its finished, which may turn out to be lower than 1.008, or 12 days which ever is the longest. Then add your hops, leave 2 days in the warm then move to a cold place for another 2 days then bottle.
@Crappyfish
There are plenty of examples on this forum about people using blow off tubes, I suggest you look them up. The theory is simple you have a tube through which the excess krausen can escape without restriction into a water seal in a collection jar or similar, and when the fermentation dies down you re-instate the airlock. Some people actually use them instead of an airlock. In practice they work most of the time to discharge excess krausen but if the yeast is sticky it can block the tube (as I found out) and that backpressures the FV which if left unattended can explosively pop the lid and that can cause a considerable mess