Hi Jimjam, antstore have more than likely put them into hibernation, so i would keep them in hibernation if i was you. It will also give you time to get there setup ready.
They would of been in hibernation since october time, and still probaly are. they wont properly wake until they decide. it should be about march time when the clocks go forward, and the temperatures rise
in deed, they are probably in hibernation (antstore keeps them in from about October till March) so if they arrive they still are a sleep. Keep them in a cold place (somewhere between 0-10°c) and wake them up slowly in March.