Whanakao - East Cape

Hi folks. Trying to do some research re this peak with it on my wish list for possible consideration somethime in the summer months within the next decade hehe. Obviously it is very rarely climbed. I have read a couple of accounts that are floating around which are more descriptive than perscriptive. Does anyone know of a map or gpx which outlines the normal route up here or any advice? Naturally it looks a substantial undertaking but would love to hear from anyone that knows anything at all.