Hoya that are less likely to survive a long trip and should be bought as big and established as possible are :
Hoya aff. Sigillatis
Nota : these cuttings certainly can survive long trips : Horticulture can be a serious thing using hormones or products that tremendously modify the survival rates of stressed plants.
Hoya and other plant collections are for sale on aleyagarden.com Plant care is available in various posts of this blog. Contact : firstname.lastname@example.org
Find all Aleyagarden posts on http://aleyagarden-blog.blogspot.com