Its impossible to say. Kush and Haze are not specific strains but a group of strains.

Kush strains include - Purple Kush, Pink Kush, Afghani Kush, Master Kush, OG Kush

Haze Strains - Silver Haze, Purple Haze (cant think of anymore but there are)

You are right in what you say about Kush as all of the strains are indicas (stoney high). Im not sure if Haze is usually a sativa as I havnt had much exposure to haze strains.

Dont worry too much about strain names, if its good, its good.