I would like to purchase a full size ipad with WLAN + cellular + 32gb for my university's work. However, a new ipad air with all those features I want over my budget limit. It costs me around 750 Australian dollars...I already checked for refurbished ipad air but there aren't any.. They only have ipad 4 with 32 gb+WLAN -cellular . I will get the refurbished ipad 4 if the ipad airs aren't coming with A7 chips with 64 bit feature.. I do know the 64 bits will last me for - quite long time in the future. .. So I am just wondering when the ipad air refurbished will mostly come out based on the past record on ipad 4? Also, do you think I will be happy with a refurbished ipad 4.. I kinda need it straight away when the uni starts... Thank you for your opinions in advanced !