Delivery/production time question 

We would be ordering a TS CLASSIC II LIFESAVING yellow in L (40-42) 23cm medium.

We need to avoid delivery while we are away over Christmas. 

Delivery time is listed as 5-7 weeks delivery which could be in late December.  Would it be possible to ask for shipment such that it doesn't arrive between 14 December and to 3 January, or should we just order after December?  Or is it in stock and could arrive in the next 3 weeks?

Thanks