In relation to the post, I wouldn't store them in my attic, the temperature gets way too hot up there to the point I am afraid the stocks will dry out considerably and crack. The basement wouldn't be my next choice with all the moisture you can get down there but if you have a dehumidifier working and the temperature stays relatively consistent, it may be just be suitable.
Are you able to store them in the garage or possibly with a trusted friend under lock and key ?