Hello murman, unfortunately I have no personal experience concerning this certain way of shipping. I would recommend to contact fist Paul from lakesidetrader, he sure has experience concerning the duration of such a shipping.
I only have had once an item shipped a long distance, at these times there was no possibility of tracing. It did last three months. Crooks of the postal service have been paid verifiably expensive air mail but sent it cheap on ground...
Regards,

wotan, gd.c-b#105

"Never look for sqare eggs" as a late owner of an original FHH-dagger used to say.